"If I were in your shoes, knowing what I know now, I would send them to Dwayne and have him port them to a level that is commensurate with your goals and use. Nothing wrong with the Mopar head, if your guides are good, porting and a good valve job and you are in business."

This is exactly what I did a few years ago when it was time to re do my 472 crate Hemi. Dwayne did his magic based on my needs for a strong street only cruiser (64 Sport Fury Conv, 4250 lbs. 5 spd). He easily squeezed 363 cfm @ .550 lift out of my iron heads and spec'ed a very satisfying solid lifter cam and EDM lifters for a very nice price. There is something special about having heads and cam customized to your purpose build. Good luck.

Ernesto