hey i have a 07 shelby gt..i have installed a e-force with 3.5 pulley,pypes l/t,an o/r h-pipe alum. d.s. ,4.10 gears and c/s 69c 20 inch wheels.thought i would join u guy and c if i can learn a few things..i have owned the car for over 2 years and love it..its the first ford i have owned..