If you have to ask, its probably not in the cards, but there are some things which you can do.
OIf you really have money (over $4000) you can get a supercharger or turbo installed on the car and tuned. That could get you a ton of power but the mods listed below are cheaper and still pretty quick
Intake, throttle body, headers, exhaust, xpipe
Transmission: 3.73 gear ratio
Suspension: just get lowering springs and sport shocks
Theres several ways to make a car faster, it all depends on budget, since you dont provide one, the best I can suggest you is taking advantage of a car performance simulator, there you can virtually do any mod to you car and see how it would improve in real life, than decide if you do it or not in real life.
easier and cheaper to add a supercharger to it( look on eBay motors and craigslist)
modifications will be needed in the engine compartment to make it fit)
then it will need to be professionally tuned in