What as some good modifications i can add?

For starters you could add a nice cold air intake with rechargable filter,This will not only give you a few horsepower but will improve gas milage,Also you can reuse the filter buy cleaning it with K&N filter cleaner and oil,With the money you save on gas and filters you can use the extra money for other mods guilt free ie,. xenon lights/amps/sterio ect/