basic bolt-ons... CAI, JDM 4-1 header(if you dont have it already), high flow cat, exhaust...
if you havent done suspension and brakes now would be a good time...
if youve done all of that then get some Toda spec B's (or C's if its not a daily driver) w/ cam gears, springs, retainers, etc...
lighter flywheel, better clutch, further port and polish, lighten the car ....