I bought the RPM heads when they first came out. (don't really want to think how long ago that was!)

I've had quite a few years of good service from them and really can't complain for the $1050 per pair that I paid.

Car isn't very far off from what is being considered, but is 451ci.
Really has been a fun combination.

Did not really do much of anything to the heads.
I had them milled to 78cc, had the guides honed slightly looser, lapped the valves and had them backcut to the lap line,
and I blended in the rough cut opening at the intake/exhaust flange.