also, LOUD 4 cylinders that aren't cammed, sounds really ricey if you don't have some legit power in it. mine sounds ricey a little bit, but it's got balls too. if you want a REALLY nice set up, you're going to be spending at least 3k. not necessarily all at once, but that's about what i've put into mine and it's not even supercharged yet. a nice setup would be:
injen cold air intake
dc sport catback OR megan catback
2.5" zzp downpipe (non catted if you want it loud and get pulled over)
bad-mab header (this header is awesome for the price)
engine/tranny mounts
fe5 suspension on pedders springs
eibach front and rear sway bars with MOOG endlinks
2.4 intake manifold and throttle body (this is the point where you would NEED to get your car tuned by Vince at Trifecta Performance)
that gives you a little bit of an idea of a NICE set up. keeping in mind that those parts are expensive, but shop around, make sure you get the RIGHT part before you buy it.
any interior/exterior work would be on you, i don't know jack about appearance mods