Sorry that 73 Z didn't work out for you.
Heck, I wish there was a law against people leaving these cars out to rust away to nothing and refusing to sell them to someone who could save them before it was too late. I think we all have a guy or two near us who has one of those cars melting away in the side yard.
We could call it The Felonious Abandonement of Restorable Treasures (FART) Act. Punishable by the forfeiture of the car to the nearest enthusiast with a demonstratable ability to restore the car back to its original condition.