I'm looking for other possible power mods.. it might be down to the wheels next like a differential, flywheel or something. Please offer anything that wouldn't affect an engine warranty.

the 13b-re w/ gt35 or gt45 turbo @ 25psi & exhaust, aem ems 4, 75 shot nitrous.
no porting, new radiator
what else can i do to push this to higher torque and hp?
is it worth it for a twin disk/ plate clutch?


thanks

oh and i need a hookup for a front or rear air valence and a a flexible front bumper that looks good.