well with the engine you SHOULD have in your car, you coukd do quite a few mods, but i dont think you will get anything bigger then 300 hp, but you can check some of the other members on here and they will be able to help you, you can always start with the simple stuff, like an cold air intake, tune, exhaust, maybe even headers, you may allready know, more air means for better horsepawer and performance!