if you insist on staying NA

Cold Air Intake
Toda Race Header (DC Race Header if your cheap)
Hondata K-Pro
IPS k2 Camshafts with eibach valvesprings
2.5" or bigger straight through exhaust system
Integra Type R Intake Manifold, or the RBC (accord euro R) intake manifold
good sticky ass tires
a good dyno tune