hey guys i have a stock 91 integra and this is what im thinking of doing... - B20 head - Skunk2 Intake Manifold - PR3 (USDM B16A) pistons - megan racing 4-2-1 header i just have a few questions.. - am i missing anything that i have to upgrade? (will it blow up on me?) - can i get away with using just 89 octane gas? - would i have to tune it when finished? - and what is your guesstimate on hp? thanks for the help!