Ive got a 9 bird and added hooker long tubes, hooker off road Y and catback, and a K&N cold air. Im wondering what would be the next big mod (other then nitrous) Ivethought about a converter but what else? My eventual plans are a heads and cam 420+ RWHP car wild mild/moderate streetability (id give up a lild rivability to go a lil faster). I want stuff that i will be able to use later down the line as my car gets faster. Whats my next best move, roller rockers or ????

 

Whats all the lil things you can do like the throttle body bypass and such?