[fordracing65]

Just hard to tune, mod motors are so plug and play basically a reflash will yield good gains. my intake for instance has runners that open and close at different rpm to aid in low end torque something dohc motors lack, so eliminating my intake would negate these gains. The 8 stack just looks so cool so 60's. Its just not modern technology for the dohc motor. So you have to choose between long and short runners, which can take alot of testing