Wow, so close and yet so far. I find it very interesting that someone put so much effort into the body and paint when all it really is is a shell on wheels. Yes, it can be done. I am with bosque - find a donor vehicle. Here's a tip you'll want to heed: make sure that donor vehicle is a '68 or '69, that way you will end up with compatible parts that you need. That's if you decide to stay with stock. You mentioned originally that you might put a Jeep or something underneath it.
This will be an interesting project to follow.
