i have a 305 with stock 1.95/2.00 heads, and i have a set of 2.02/1.98 straight plug fuelie heads, so i'll test oin my stock heads and if it does anything then i will port my fuelie heads, ive had an idea ive named "turbo porting" which involves kutting a helix into the runners to increase intake velocity but i would rather test that on a flow bench