with a quick measure with the old stanley. the aw11 front calipers were about 132mm. given ive got GT4 twin pot numbers on the front of the mr2 without having to make any adaptor plate im assumign they are the same
the st205 ones will bolt right up dude - you thread the caliper to accept a 14mm bolt by memory and they are on ..
if your doing the brake upgrade the only dramas is getting the spacing out of the rotor - it sits about 5mm wider than the st185 one to line up with the new caliper ..
nah, i'm not using the ST205 calipers. Most likely using a custom kit. I want bigger than 296mm, plus I want to avoid using spacers. I've heard of issues with ST205 rotors too, people seem to have more luck with the WRX 99+ jobs..
I'm probably going for 326mm WRX STi rotors and Brembos, but a recent price hike on the Brembos has got me on the lookout for other calipers. Alcon, AP Racing and Brembo are all around the 700-800 mark. Harrop... don't bother there $1000+.
Anyways, I ripped off the calipers tonight and measured with the veniers : 131.12mm, so I'm saying 131mm.