50enzo

serious answers only please! whats the diff from 50 state legal heads, and ones that arent? if they can be the same in all aspects, in cc and flow, why can u only use 50 state legal ones? there so expensive too!!
just because they are 50 state, can they blow dirty?

nitrous_bob

1.9/1.6 valves instead of 2.02 intake and the CARB #