I have had the truck for two years now. It had a 6" suspen and 3" body lift, a few lund accesories beside that stock. 302, o.d. tranny, ford 8.8. So far I have put headers, 2.5 with high flow cats, k&n fpik kit, throttle body spacer, removed air pump, flex fan and got some ese6 head open up on exhaust side. It moves good now.