Musings: Restoration = Money loss! (ALWAYS)
The best way to make money on cars are to find ones that are 90% done, desirable and the owner has lost interest in them so maybe you can buy them right. If you got them bought right then finish the other 10% and sell it. The comment on the factory ralley wheels is spot on. They will always have a value anyone that buys the car can sell them to help fund what they wheels they want if the don't want to keep the rally wheels.