Author | Topic |

Location: Montrose, VIC
Registered: May 2002
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Re: Why no love for the 4A-C? Bullies!!
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Tue, 08 October 2002 13:34

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First up, let me say I loved my old 4AC! It took enormous punishment, and I ended up giving it to someone who couldn't afford to replace their 4AC. That said, I got rid of it for a reason. Namely, lack of excitement!
The major obvious difference is the head. Yes the rods, pistons, cranks, etc. etc. are different too, but about the only direct difference to power in the bottom end is the comp ratio of the pistons, the rest is for strength/revs.
Now the reason nobody bothers: Take a good look at a 4ac head - terribly designed piece of gear! Non cross flow, lousy ports, etc. etc. 4AG head is quite decent. So WHY would you spend who-knows-how-much flowing a 4ac head to still only end up falling well short of a stocky 4ag which can be picked up for a few hundred bucks, and bolt straight in place of the 4ac? The 4ac IS heavily restricted, but the best way to work it is, sadly, to ditch it. It's just not practical to do anything with it when theres such an obvious replacement out there. Plus remember that the money saved by getting a 4ag in place of a 4ac could be spent on cams, headwork, etc. for th 4ac, which will place you SO far in front of the 4ac it just doesn't bear to think about... Oh yeah, plus with a 4ac you're still stuck with the weaker lower comp internals, which would cost a mint to replace if with non factory parts!
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| Subject | Poster | Date |
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Why no love for the 4A-C? Bullies!!
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AE86 | Tue, 08 October 2002 13:25 |
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Re: Why no love for the 4A-C? Bullies!!
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mrshin | Tue, 08 October 2002 13:34 |
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Re: Why no love for the 4A-C? Bullies!!
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haggis | Wed, 09 October 2002 02:29 |
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Re: Why no love for the 4A-C? Bullies!!
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EvilJack | Wed, 09 October 2002 04:08 |
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Re: Why no love for the 4A-C? Bullies!!
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Blacki | Wed, 09 October 2002 04:21 |
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Re: Why no love for the 4A-C? Bullies!!
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AE86 | Wed, 09 October 2002 04:32 |
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Re: Why no love for the 4A-C? Bullies!!
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haggis | Wed, 09 October 2002 06:50 |
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Re: Why no love for the 4A-C? Bullies!!
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Hunty | Wed, 09 October 2002 07:06 |
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Re: Why no love for the 4A-C? Bullies!!
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familiagtx | Wed, 09 October 2002 09:35 |
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Re: Why no love for the 4A-C? Bullies!!
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St3ve_AE92 | Wed, 09 October 2002 09:48 |
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Re: Why no love for the 4A-C? Bullies!!
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mrshin | Wed, 09 October 2002 10:21 |
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Re: Why no love for the 4A-C? Bullies!!
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EVOSTi | Wed, 09 October 2002 11:33 |
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Re: Why no love for the 4A-C? Bullies!!
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t_temperley | Wed, 09 October 2002 11:40 |
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Re: Why no love for the 4A-C? Bullies!!
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St3ve_AE92 | Wed, 09 October 2002 11:46 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Fri, 11 October 2002 07:35 |
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Re: Why no love for the 4A-C? Bullies!!
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Singlecam | Sun, 13 October 2002 07:03 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Sun, 13 October 2002 11:03 |
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Re: Why no love for the 4A-C? Bullies!!
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AE86 | Fri, 11 October 2002 08:01 |
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Re: Why no love for the 4A-C? Bullies!!
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jazae86 | Fri, 11 October 2002 16:42 |
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Re: Why no love for the 4A-C? Bullies!!
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FLY PSI | Sat, 12 October 2002 02:48 |
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Re: Why no love for the 4A-C? Bullies!!
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jazae86 | Sat, 12 October 2002 08:06 |
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Re: Why no love for the 4A-C? Bullies!!
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Blacki | Mon, 14 October 2002 01:04 |
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Re: Why no love for the 4A-C? Bullies!!
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Singlecam | Mon, 14 October 2002 06:07 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Mon, 14 October 2002 06:15 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Mon, 14 October 2002 06:23 |
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Re: Why no love for the 4A-C? Bullies!!
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Singlecam | Mon, 14 October 2002 06:51 |
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Re: Why no love for the 4A-C? Bullies!!
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Classique71 | Mon, 14 October 2002 10:09 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Mon, 14 October 2002 11:19 |
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Re: Why no love for the 4A-C? Bullies!!
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Rex_Kelway | Mon, 14 October 2002 13:41 |
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Re: Why no love for the 4A-C? Bullies!!
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AE86 | Mon, 14 October 2002 17:03 |
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Re: Why no love for the 4A-C? Bullies!!
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Rex_Kelway | Tue, 15 October 2002 05:39 |
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Re: Why no love for the 4A-C? Bullies!!
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AE86 | Tue, 15 October 2002 09:30 |
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Re: Why no love for the 4A-C? Bullies!!
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chrisss | Tue, 15 October 2002 10:06 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Tue, 15 October 2002 10:17 |
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Re: Why no love for the 4A-C? Bullies!!
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AE86 | Tue, 15 October 2002 11:21 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Tue, 15 October 2002 11:33 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Wed, 16 October 2002 10:29 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Thu, 17 October 2002 00:18 |
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Re: Why no love for the 4A-C? Bullies!!
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chrisss | Thu, 17 October 2002 10:07 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Thu, 17 October 2002 13:28 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Sat, 19 October 2002 03:00 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Mon, 21 April 2003 23:37 |
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Re: Why no love for the 4A-C? Bullies!!
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biased99 | Fri, 18 October 2002 10:10 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Fri, 18 October 2002 14:39 |
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Re: Why no love for the 4A-C? Bullies!!
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biased99 | Sat, 19 October 2002 10:07 |
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Re: Why no love for the 4A-C? Bullies!!
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Rex_Kelway | Sat, 19 October 2002 07:56 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Sat, 19 October 2002 09:30 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Sat, 19 October 2002 10:57 |
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Re: Why no love for the 4A-C? Bullies!!
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mrshin | Sun, 20 October 2002 11:16 |
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Re: Why no love for the 4A-C? Bullies!!
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biased99 | Sun, 20 October 2002 23:44 |
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Re: Why no love for the 4A-C? Bullies!!
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wilbo666 | Mon, 21 October 2002 00:22 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Mon, 21 October 2002 02:05 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Mon, 21 October 2002 06:08 |
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Re: Why no love for the 4A-C? Bullies!!
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FLY PSI | Tue, 22 October 2002 11:49 |
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Re: Why no love for the 4A-C? Bullies!!
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mrshin | Mon, 21 October 2002 13:43 |
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Re: Why no love for the 4A-C? Bullies!!
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biased99 | Mon, 21 October 2002 23:05 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Tue, 22 October 2002 00:23 |
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Re: Why no love for the 4A-C? Bullies!!
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FLY PSI | Tue, 22 October 2002 01:22 |
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Re: Why no love for the 4A-C? Bullies!!
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Blacki | Tue, 22 October 2002 01:37 |
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Re: Why no love for the 4A-C? Bullies!!
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mrshin | Tue, 22 October 2002 01:40 |
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Re: Why no love for the 4A-C? Bullies!!
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mrshin | Tue, 22 October 2002 01:53 |
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Re: Why no love for the 4A-C? Bullies!!
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mrshin | Tue, 22 October 2002 01:55 |
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Re: Why no love for the 4A-C? Bullies!!
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Blacki | Tue, 22 October 2002 02:05 |
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Re: Why no love for the 4A-C? Bullies!!
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mrshin | Tue, 22 October 2002 02:07 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Tue, 22 October 2002 14:24 |
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Re: Why no love for the 4A-C? Bullies!!
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IRA11Y | Wed, 23 October 2002 07:01 |
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Re: Why no love for the 4A-C? Bullies!!
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FLY PSI | Wed, 23 October 2002 07:39 |
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Re: Why no love for the 4A-C? Bullies!!
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poida | Sun, 24 November 2002 04:28 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Wed, 23 October 2002 07:32 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Sat, 23 November 2002 23:37 |
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Re: Why no love for the 4A-C? Bullies!!
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mrshin | Sun, 24 November 2002 22:06 |
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Re: Why no love for the 4A-C? Bullies!!
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Singlecam | Mon, 25 November 2002 16:04 |
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Re: Why no love for the 4A-C? Bullies!!
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Singlecam | Mon, 25 November 2002 16:07 |
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Re: Why no love for the 4A-C? Bullies!!
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turbokid | Wed, 27 November 2002 05:35 |
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Re: Why no love for the 4A-C? Bullies!!
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bliz | Wed, 27 November 2002 05:42 |
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Re: Why no love for the 4A-C? Bullies!!
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wilbo666 | Wed, 27 November 2002 06:07 |
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Re: Why no love for the 4A-C? Bullies!!
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THE WITZL | Wed, 27 November 2002 22:28 |
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Re: Why no love for the 4A-C? Bullies!!
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haggis | Wed, 23 April 2003 04:05 |
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Re: Why no love for the 4A-C? Bullies!!
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BillusMcFlunday | Fri, 15 July 2005 06:21 |
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Re: Why no love for the 4A-C? Bullies!!
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draven | Fri, 15 July 2005 06:26 |
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Re: Why no love for the 4A-C? Bullies!!
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Corona RT142 | Fri, 15 July 2005 06:29 |
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Re: Why no love for the 4A-C? Bullies!!
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Merudo | Fri, 15 July 2005 06:30 |
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Re: Why no love for the 4A-C? Bullies!!
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oldcorollas | Fri, 15 July 2005 07:38 |
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Re: Why no love for the 4A-C? Bullies!!
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ViPeR_NiPPleX | Sat, 16 July 2005 00:02 |
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Re: Why no love for the 4A-C? Bullies!!
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kingmick | Sat, 16 July 2005 23:05 |