Anyone ever run Speedmaster Heads on their small blocks

I can hardly wait till 318 goes through his..
I'm on this truck project and when I get on one thing I stay on it like a dog with a bone. I know way too many people who have themselves scattered about too many projects...
Gentlemen- I do one thing at a time, I do it very well, and then I move on...
Charles Emerson Winchester the third...