Thanks for your responses, gentlemen. I know that the exact build dates are moot points, just my picky nature, was basically looking at the relative age of everything, and it seems it paid off, in that both blocks seem to be stock bore, so although they both need bored, there should be plenty of material to work with. Tom, I'll be calling you in the next couple weeks to discuss my build. Need to finish a couple of Harleys to help finance my dreams.