How to get a title

[Novadiecast]

I have found a car 69 Nova 396-375, 4 speed, Bucket seat car. No title owned by a police officer that has run the vin and it is clear. Car still has the plates on it from the previous owner and he sent a registered letter to the address and it came back non-deliverable. Car is complete and no way a parts car. Car can be driven home. He is giving up on it and selling it. I have an appointment to see it this weekend and will probably buy it. How can I get a title for such a car. There has to be a way to do it????