Can somebody please enlighten this 5th Gen owner (myself) as to the specs of a 6th gen GT Brake system. What I'd like to know is if I want to run a 6th gen brake setup on my car. Now I know that generally speaking 90-99 Celicas are very similiar, i just want to know if there were any differances in the braking systems...any feedback is greatly appreciated!!!! Thanks

They're essentially the same. My advice to you is to look into the ST185 brake setup. I believe the rotor size is the same, but the calipers have more pistons. Coomer had this setup on his Celica.

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92+ celica GT and GT-S share the same front brakes as 92+ Alltrac turbos (277mm disc, single caliper). Some Alltracs, I think 90-91 or so have twin piston front brakes with smaller diameter rotor. The hubs between the 5th and 6th gen celicas are slightly different. 6th gen hub centers are about 1mm larger in diameter, so 5thgen rotors won't "directly" fit unless you grind out that clearance.