I have spanked a vast variety of cars including the car above mentioned srt 8..."BAD" srt8 are gutless have nothing to the srt6, also i've raced my friends modded 2002 zo6 vette with mods he has an xpipe hooker headers and was beat bye maybe a car length at about 120 mph but up TO 120 it was neck and neck...i've also spanked a bunch of m3's and vettes...we raced a 2007 brand new vette about a month ago and also neck and neck it was whoever got the jump off the start...the only mod i've done is removing the resonator and building a larger diameter exhaust system...