If I had a blue mach 1 (which I want to get one day) I'd get black fr500s, tinted tails, smoked headlights, slammed, mac long tubes, mac h-pipe, flowmaster 40 series 2 chamber catback, mgw orange short shifter and probably leave it like that for a while. maybe a nice clutch. maybe some gears. other than that, just drive it and love the car. then down the road get an s-trim.