SUSPENSION! Its amazing what a nice set up will do for you and it wont cost you so much unless you do coilovers.
These cars really shine with just a good suspension set up and I dont think anyone can really argue with that. After you do that, then address your power. Boost it or dont bother with power mods.
..:: sleestak ::..
"Our mother of blessed accelleration, dont fail us now!" -- Elwood Blues