at risk of sounding like a dumbshit, i honestly do not know what exhaust or springs were used. i race (vipers) with the guy who owns the dealership and to be honest, i trust his judgement. however, from racing vipers for years, id say borla exhaust (from the sound) and as for the lowering kit, it definitely gave the truck what it needed and it looks awesome. is xmetal the only one? filters obviously K&N.
tell me of this "pcm flash"...
also the rearend sucks ass, too much hop, is there a solid recommendation for trax bars??