Lots of cylinder head guys out there. If you want hands down the BEST then I would talk to Tom Slawko at Slawko racing heads. Self Racing Heads is another very good shop. The aforementioned shops I am sure also do very good work. Dwayne is always highly spoken of, and I have had some stuff done by CompuFlo and it was nice.
"I am not ashamed to confess I am ignorant of what I do not know."