Looks like a great car to start with. If I were you I think I would keep the '75 for parts. You have all the 5 lug stuff already sitting there.
good deal tim, that 75 was a bit too far gone for my liking. I have a 5 lug 8" here for ya if you need it, and the brakes aren't frozen
Hell yeah I'm probably going to take everything off the '75 so it'll be easier to try and get everything working