a friend of mine has a pretty stock lt1 and beat a ws6 newer body style and a 05 corvette(by half a car but hey a wins a win)....and i know his cars fast...it hangs right close to my crx..which ive beaten an 05vette by 1 link from 40mph to 90mph....as far as i know he just has hollowed cat a pretty built tranny k & n filter and the tb bypass...and some resistor thing that u plug into the sensor in the intake...???