I've not looked too hard at the rod bolts... but I will. I was planning on a set of forged H-beam rods, but wanted to know if these ones would be ok to use.
I would assume it had an eaton m90 on a custom intake... the guy had built another just like it.
Yes, I mean the edge of the pistons around the cyl wall.
I'm holding the book in my hand... 20 psi is 450-670hp ish. Depending on the level of build... I've also read the book he references... maximum boost by Corky Bell, though I do not recall this formula in the book. .052 x displacement x (boost + 14.7)
I'll have to look it up.

Hope this doesn't come across as abrasive... it certainly isn't meant to be!!!