I bough all my mods from AM, and i can beat almost any modded gt (w/o a blower) on the tracks. I paid about 4k for everything. S/C 3.73 gear and t-loc, duel exhaust kit(not from AM) and some other little mods. I think it was a good investment, and i love the power. Also i have been told from numerous amount of people that my exhuast sounds about 10x's better then a GT. Most people think i have a GT, because of the duels. Im a V6 and a V8 killer!!!