Stock pistons Rusty.. I'm going to measure how much they are in the hole, ( late 69 engine) and just cut the heads to try to make some compression. Simple , low buck build. Don't have a lot of $ to play with, but had good success in a 68 383 and a 66 440 years ago with stock components for a street engine. I see your tech stuff on here and know you've thrown quite a few together.