I just made $500 off of ebay and I am not sure what to buy next. Outlawing headers, what should I buy next? I already have a catback and a midpipe so that's taken care of. I was thinking of going with an upper plenum, throttle body, and eventually a JLT RAI for my Mustang. I don't have enough money for a torque converter or gears plus install so I am not ready for that yet. I was also thinking about the modular depot sct flasher tune but I don't know if I have enough mods yet to fully benefit. I don't think I have enough money for cams?? Sorry for rambling but there is so much to choose from for that price range that I don't know what would benefit the most.