ok, so i've decided on my rims, body kit and wing finally. but after that cant decide which section to concentrate on next so please give some opinions. either the drivetrain parts...crank pulley, trd clutch kit with lighten fidanza flywheel (45% lighten of trd 35%) or finish off my exhaust engine back with trd header and all stainless steel downpipe and the rest of the piping to the muffler. what would you do?