I have a 96 gsr with 80k on it. It has i/h/e as far as speed modifications if you can call them that. Next I was doing a highflow cat. After that... four options... keeping in mind I am a college student and have to have a reliable car to drive. I also will be doing some SCCA stuff and the occasional (2x a year if that) track day:

1: All motor: Just start from the inside out and build... higher compression... etc.
2: Nitrous: Either build a bit or just strap on a 50-100 shot.
3: Supercharger: Jackson Racing style... radiator... block guard... 10psi... and leave the car otherwise stock
4: Turbo: Run 10psi...