BAD DOG!
FYI, vortec heads wake a TBI motor up. They flow a bit better than the old double hump heads. The pistons in the tbi's bring the compression up, but you can find thick head gaskets for the install. The factory makes an intake for the conversion also.
Nice rig. I have been following your resto. I bought one last November. I don't have your ambition, I am just doing what is necessary to mine. I do a lot of highway, so it is staying mostly stock.