No engine, tranny, rear suspension, or frame is one thing, but no ashtray. Forget it!
Seriously, there isn’t much left of her. You didn’t mention the number badge, but without that, you can’t call her a JPS. You would also need a 365 tranny which I think are pretty hard to find. From your description, it doesn’t sound practical at all but sometimes we happily do the impractical for fun. But you aren’t sure if you have the energy to start a new project which to me means that you probably don’t. Given that, my advice is to walk away and help him find a buyer who does because it’s going to be a pretty big project!