i would have to say my most important mod would be my wheels (17" Borbet Type-S), just because wheels are that most noticable mod that makes my celica different (no kit on my car). my7 favorite mod would be the S2000 antenna, OMG did i hate the stock one, i didnt even drive my car for a day with it, i had the antenna before i had the car lol. and i know this isn't the COOLEST mod in the world, but i bought the car with a blind spot reducer, not the oval kind the rectangle kind. and they really really come in handy! Also dynamat for the trunk, is damn important, i have two 12" JLw3v2's (w/a JL 500/1 amp, rockford 1 Farad cap with digital readout, and a pioneer premier deck) and keeping my trunk from rattling keeps me very happy...
