I do have your book Andy and have read most of it. Very good read - congratulations. You seem to favor the 4.25 stroke (or so it seemed to me). Any particular reason other than cubes? I will look into some of the other kits but the 4.125 Mancini kit seems to be a very attractive price compared to what I have seen so far.

I did see an earlier post where you were talking about running HP manifolds on your 470. I thought you said you were trying the same on a 512. How did that turn out, did you use the .528 MP cam on that also?

Steve