Well there are multiple ways, I dont know that one is best though. You might try:
1. low restriction air filter
2. Headers
3. Ported lower intake and heads
4. Comp 410 cam
5. High flow, or no, cat converter.
6. Dual exhaust
7.
Supercharger
8. Nitrous
9. 95-97 closed chamber heads, which up the compression ratio, not for use with #7
That's about all I can think of now. My brain hurts.