will it run, burried a 1957 Plymouth Belvedere

I think it will definatly be salvagable. I also agree that all the seals and gaskets will be as shot as you could be. If they left gas in it you may as well kiss the fuel system good by. I think it will have some rust. I am interested to see what they find when they uncover it. What would be sickly funny is if they found someone sittin in the car because they just couldn't bear the thought of it being burried alone.