How much did it cost you?

If you're going to buy a rusty shell of a car and invest a small fortune in it, buy something that has a high resale value and large market/fan base. You could loose your shirt in some of them. The cost of new floor pans, quarter skins, paint, doesn't vary much between 1975 Dusters and 1970 Barracudas.
With enough time and hunting you can find a good deal on a car that was already restored 5 or more years ago and starting to show new rust. That's seller suffers the loss. You go happy moparing.