lots of stuff done to it, trpe r cams, pistons, headers, intake manifold, bigger throttle body, injectors, aluminum fly wheel, and probably a bunch of other stuff. i bought the car the way it sits and the guy said that it would probably run even better if it had a better ecu. i think he said it has a spoon chip in it. he said it redlines at 9500 but im kinda scared to push it that high