340 intake and carb help
RPM dual planes rock, air gap or not depending on hood/filter.
Get a demon carb, you only cry one time when you pay for it.
I've been down the road of power valves and leaky performers.
Demon or nothing, won't EVER buy anything else.
I'd say a 725 road demon if you can get one on ebay for under $400 is what you want.