Has anyone seen correct specs for the '05 big brakes and red calipers. I have seen the '04's were 11.7" front and 11.3" solid rears. Does anyone have the '05 diameter? And, I thought I saw something about the rears on the '05 being vented and not solid?

http://www.pontiac.com/gto/images/bg_image12.jpg

12.6 diameter vented front disk, and 11.24 vented disks rear.

they look juicy :P

Ya know, I wonder if you could modify the front calipers and rotors to work on the rear also and run 12.6's all the way around? (Not that it'd help much since the front does the great majority of the braking anyhow.) Heck, I wouldnt be suprised if the front rotors fit right into the factory rear calipers anyhow. You'd just need some sort of spacer bracket to push the caliper out enough to fit the big rotor underneith. The only other thing I can see stopping you from doing such a 'conversion' would be the rotor thickness. Hmm....

The PBR brake set on the '05 GTO looks very similar to the one that's fitted to the 03/04 Mustang Cobra.