Wes,
Thanks for sharing the article on your B1 engine.
I don't plan to put a vacuum pump on; at least not the first year.
Your pistons do look similar to the ones I bought (lateral gas ports, small dome, large valve reliefs, top and side coatings,etc.
My heads were cut down to 60cc, and my compression ratio will be close to 15.0

The elongation of the pushrod hole in your heads is more than I initially did. I will double check with another mockup when my block comes back from the machine shop and I can put a cam in the block (they are putting the cam bearings in for me). The article mentions enlarging the "oil drain back holes" , it looks like they are the exhaust pushrod holes. Are all of them done like that or just the ends?
I am hoping to put a regular MSD billet distributor in mine. Hopefully it can be done with only a little clearancing of the head and valve cover rail.