fat_al

building a track car RB30/25 combo looking for over 600hp is there going to be a big advantage with a 3.5 over a 3 ???

I have an R33 GTST track only car was looking to upgrade the rear to make it more stiff has anybody used these and have any comments http://www.gktech.com/index.php/solid-subframe-bushes.html http://www.gktech.com/index.php/s14-s15-subframe-weld-in-reinforcement-plates.html