Yessir Snow, you've taken on a mighty big project, but the rewards will be worth it. You will end up with a very nice car.
I've got a friend here in Alberta that grafted a Model A roadster rear onto a '27 Hudson that was made into a truck in the '30's. Anyhow, it came out pretty nice except the body reveals didn't line up in one spot, so I always wanted to build a hand held, big throat bead roller to zip in some funny shaped beads. That would clear up those grafting problems. If only I wasn't just a idle dreamer, eh.
Keep on tinkering.