Yeah, what Compactelectra said.
The sad but true fact is the best way to maximize your return on investment with that machine—not that I'm recommending you do this, please don't!—is to part it out and sell off the pieces as NOS parts. I think most of us who collect these things realize they aren't going to appreciate the way a classic car will. We get them to tinker with them, fix them up, use them and enjoy them for what they are.
Now, go ahead and open that box! You know you want to. What are you waiting for?