Sweet, congrats dude.
If you need help with the Subaru swap, there's a good thread going on in the engine section, I'm trying to get some more wiring info on it, but I just can't seem to find any yet.
Sounds like you've got a much clearer plan than I did when I first started. I had the Cup 2's bought before I even found a car. I ended up with a '64 Ghia sitting on a '74 pan with new uninstalled floor pans.
Not as good as a notch, but I only paid $300 for the whole thing. It was also gutted, just a shell and pan. I'd love to have done a notch for my project, but you simply can't find a solid notch in my area for the $300 I paid for my Ghia.
Please keep us updated.