I'd be interested in peoples info too.

I use Wayne Snyder (Able Machine) in Wyoming Michigan (near Grand Rapids).
He has a machine shop there and is reasonable. He seems to know his stuff, and prices were decent last time (a few years ago). I've never dynoed and am not qualified to comment on how competetitive his motors are, but I've had pretty good luck. I used to autocross with him, and he has (had?) a killer spitfire with a highly modified 3SGE.