start w/ performance mods first, cold air intake, exhaust, header (not cheap), hi-flow cat, adjustable cam-gears, V-AFC and dyno tuning. Then do the body/rims and such... also, don't get gauges ... you don't need them unless oyu are turboing your car or something, they look gay. And lighting... just get an HID kit for the headlights and maybe some nice fogs, don't do anything else, thats just MY opinion thougvh.