time to look for another platform.
you'll need forced induction or heavy engine build.
you'll eventually start seeing larger and larger bills on your requirements.
for example. to go high compression, you'd start with basic bolt ons which are 100-700 dollars. then you'll do cams which are 300-800, then port, polish, bore which is 600-800. then pistons, rods, rings which is 800-1200....see what i mean.
however, a turbo kit can be had for 2000-4000, plus the installation plus the potential hazard of destroying your auto and swapping a 5speed for 1800.
nitrous however is your friend, 75 shot...runs you about 500, more if you're paying for installation. you can even shoot 75 on stock everything and anything.