Originally Posted by rickseeman
Originally Posted by 69b1dart
i have dart heads on this motor,looking for dual plug mullens heads


I assume you mean 433 heads? AKA twin plug heads, AKA replacement heads, AKA Ross Foundry heads. Mullens was a head porting shop. They ported most of the top hemi heads for a long time. I feel you will make more power with the heads they make today.
iagree up

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)