I haven't done much...
18" Chrome rims.
600 Watt with two 12" subs.
35% window tint.
Took the Catalyc Converter out, straight pipe, not that loud, but love the sound, Changed mufflers also.
I'am going to change the foggy headlight and fix the fender within a month, i also plan on giving it a full paint job, color blue, like the subaru wrx.
I love this car, handles good, its a pleasure to drive and it sure turns heads as you go down the streets.
As for the rest, I wanna keep it stock.