So I heard the SUPRA TT CALIPERS FIT with no fabrication. The GS400 ONES u have to RCA, What's RCA?

 

There are a bunch of threads on this. I believe there's a good one in the FAQ's section. Quick answer: Supra tt do bolt up. You need to trim or remove dust shield and have wheels that will clear the calipers. RCA's are roll center adjusters. I think you meant ls400(not GS400) calipers, and yes you need rca's for those to work.

 

Nope GS400

 

GS300 & GS400 use the same caliper.

 

just save your breath, this one is special

 

Lol.......

 

The GS 400 DOESN'T USE THE SAME CALIPER

 

Yes it does. You're thinking of the LS400. I can't believe you bumped a year old thread of you asking a question that's been answered dozens of times, just to be wrong more.