Theirs honesty not much you can do. Intake and exhaust are the most common. However nobody actually makes a turbo kit for your car so you would have to source all the parts yourself. Intake and piping would need to be custom, as well as getting an intercollegiate and mounting it.
The problem with turbo's is the massive amount of parts makes them finicky if something isn't working right. That and you need a custom tune which can run $1,000 or more. Theirs a reason not many people are running around with forced induction. A turbo set up will cost you more then then the value of the car.