I had eddy heads/M1 ported polished gasket matched. Added roller rockers per eddy instructions and I dont believe it made a difference in anything other than aesthetics. Alot of money spent to make the runners look smooth. MP 380hp crate motor
Wow I wish you would have told us this yesterday. You would have saved my customer 300.00 and me a lot of time and work. Did your gas mileage increase any.