You could do a top swap...or a turbo build since those usually make more power than our supercharged cars.
You could also take off your rims/tires and whatever you want off of it and sell the car you have now and put all the money towards building a supercharged car.
If your going for all out performance turbo would be your thing I think. However i'm not sure how streetable these cars are turboed. Never looked into it since I have no intetion of taking the car that far hp wise.

I'm sure someone with more experience will chime in since I myself am still learning with these cars and am by NO means an expert when it comes to building one of these cars.

Good luck with your decision and remember it's YOUR money. Do what you want with it.