intake/header/exhaust...

after that your more or less strapped for what you can do... you can start messing with it a little bit... but in the end it's your taste not ours.

i really like the ITR lip paint matched w/ a ls/gsr (or no) wing... a good drop and clean 16" rims.

you can make the attempt at KYB AGX's coupled with eibach sport/pro kit... but i think you may want a bit more than that.... if you'd like .... PM me and i'll send you some pics of my car with that drop