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Norbie Forums Junkie Location: Brisbane Registered: May 2002	Re: Building an IS430 Fri, 04 February 2005 00:47 Unfortunately Toyota changed their diff codes in the early 90's, so there's no such thing as an F diff or a G diff as such... they have different codes now but I haven't been able to find out for sure what they are! I'm pretty sure the NA JZA80 diff (A series) is the same as the old G series but apart from that I'm clueless. Anyway, based on the measurements you've given I'd say the IS200 has the old F series diff (7.5") and the IS300 has the old G series diff (8"). IMO the F diff will be strong enough with an aftermarket centre, since mine has held together for nearly 2 years behind a 2JZ-GTE, but the G series upgrade wouldn't be a bad thing. I guess it depends how much it costs and what it's worth to you! Like you say finding an IS300 rear end isn't going to be an easy task. If it turns out the IS300 rear end is interchangeable with the NA JZA80 rear end that would make life a lot easier - they come up for sale every now and then on SupraForums. Perhaps some research is in order? [Report message to a moderator]

	Subject	Poster	Date
	Building an IS430	ozaristov300	Wed, 19 January 2005 13:58
	Re: Building an IS430	shinybluesteel	Wed, 19 January 2005 14:21
	Re: Building an IS430	manmx83	Wed, 19 January 2005 14:33
	Re: Building an IS430	Norbie	Wed, 19 January 2005 23:07
	Re: Building an IS430	KOFFEE-BLACK	Wed, 19 January 2005 23:32
	Re: Building an IS430	Nark	Thu, 20 January 2005 00:23
	Re: Building an IS430	KOFFEE-BLACK	Thu, 20 January 2005 01:15
	Re: Building an IS430	Norbie	Thu, 20 January 2005 01:18
	Re: Building an IS430	ra23celica	Thu, 20 January 2005 07:50
	Re: Building an IS430	mrshin	Thu, 20 January 2005 10:10
	Re: Building an IS430	ozaristov300	Thu, 20 January 2005 11:14
	Re: Building an IS430	Nark	Thu, 20 January 2005 11:28
	Re: Building an IS430	Norbie	Thu, 20 January 2005 11:55
	Re: Building an IS430	CrUZsida	Fri, 21 January 2005 01:12
	Re: Building an IS430	Nark	Sat, 22 January 2005 01:35
	Re: Building an IS430	off-road	Thu, 20 January 2005 11:31
	Re: Building an IS430	deesonet	Thu, 20 January 2005 12:11
	Re: Building an IS430	gianttomato	Thu, 20 January 2005 12:53
	Re: Building an IS430	ozaristov300	Sun, 23 January 2005 01:53
	Re: Building an IS430	KOFFEE-BLACK	Thu, 20 January 2005 13:19
	Re: Building an IS430	ae86drift	Thu, 20 January 2005 14:47
	Re: Building an IS430	Soarer	Thu, 20 January 2005 23:24
	Re: Building an IS430	CrUZsida	Sat, 22 January 2005 02:17
	Re: Building an IS430	KOFFEE-BLACK	Sat, 22 January 2005 08:49
	Re: Building an IS430	deesonet	Sat, 22 January 2005 12:19
	Re: Building an IS430	ozaristov300	Sun, 23 January 2005 01:43
	Re: Building an IS430	Norbie	Mon, 24 January 2005 01:13
	Re: Building an IS430	ozaristov300	Mon, 24 January 2005 01:34
	Re: Building an IS430	deesonet	Sun, 23 January 2005 06:21
	Re: Building an IS430	ozaristov300	Sun, 23 January 2005 10:46
	Re: Building an IS430	CrUZsida	Sun, 23 January 2005 11:09
	Re: Building an IS430	Norbie	Sun, 23 January 2005 13:30
	Re: Building an IS430	CrUZsida	Sun, 23 January 2005 13:47
	Re: Building an IS430	bbaacchhyy	Mon, 24 January 2005 18:19
	Re: Building an IS430	KOFFEE-BLACK	Sun, 23 January 2005 12:28
	Re: Building an IS430	Norbie	Sun, 23 January 2005 13:32
	Re: Building an IS430	mrshin	Sun, 23 January 2005 13:32
	Re: Building an IS430	mrshin	Sun, 23 January 2005 13:39
	Re: Building an IS430	CrUZsida	Sun, 23 January 2005 14:01
	Re: Building an IS430	ozaristov300	Sun, 23 January 2005 14:01
	Re: Building an IS430	stark	Mon, 24 January 2005 15:20
	Re: Building an IS430	Jag7799	Sun, 23 January 2005 14:51
	Re: Building an IS430	Norbie	Mon, 24 January 2005 01:56
	Re: Building an IS430	ozaristov300	Tue, 25 January 2005 13:28
	Re: Building an IS430	Norbie	Tue, 25 January 2005 14:12
	Re: Building an IS400 VVTi	ozaristov300	Thu, 03 February 2005 13:06
	Re: Building an IS430	Norbie	Thu, 03 February 2005 14:22
	Re: Building an IS430	ozaristov300	Thu, 03 February 2005 15:44
	Re: Building an IS430	CrUZsida	Thu, 03 February 2005 15:48
	Re: Building an IS430	ozaristov300	Thu, 03 February 2005 16:00
	Re: Building an IS430	Norbie	Fri, 04 February 2005 00:47
	Re: Building an IS430	nilezy	Wed, 09 March 2005 13:03
	Re: Building an IS430	ozaristov300	Thu, 10 March 2005 11:00
	Re: Building an IS430	nilezy	Fri, 11 March 2005 00:35
	Re: Building an IS430	Norbie	Wed, 09 March 2005 13:14
	Re: Building an IS430	nilezy	Thu, 10 March 2005 08:15
	Re: Building an IS430	CrUZsida	Thu, 10 March 2005 08:25
	Re: Building an IS430	CrUZsida	Wed, 09 March 2005 13:26
	Re: Building an IS430	Dr_Love	Mon, 04 April 2005 10:35
	Re: Building an IS430	ozaristov300	Mon, 04 April 2005 11:00
	Re: Building an IS430	Dr_Love	Tue, 05 April 2005 05:27
	Re: Building an IS430	ra23celica	Tue, 05 April 2005 05:32
	Re: Building an IS430	Norbie	Tue, 05 April 2005 05:42
	Re: Building an IS430	MR 1JZ	Tue, 05 April 2005 06:01
	Re: Building an IS430	ozaristov300	Tue, 05 April 2005 07:09
	Re: Building an IS430	THE WITZL	Tue, 05 April 2005 05:55
	Re: Building an IS430	KOFFEE-BLACK	Tue, 05 April 2005 07:51

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