Just to humor myself I decided to measure the volume of the chamber on the '66 1bbl head I modified to see what it is and to plug that number into my engine parameters. It came out to 65cc's and have 9.55:1 compression on my engine, which is about 1.25 more than it currently has. I'd have to work over the other chambers, do some porting, and possibly minor machine work for me to be happy enough with it to use. I do think I have some brand new OE valves for this head, and I probably would shim up the springs it came with. If I used a set of TRW LF2289 pistons and cut some small valve relief's in them, my compression would be a flat 9.0. So I think I may have a game plan for a "back up" engine. What I'm considering for my primary turbo engine is getting some forged flat top pistons and have some minor valve relief's cut into the top and that should net me 8.8:1 or so, which is good.
