My father is 94 and I am working to sell off some of his car inventory. I was intrigued to find he has an unrestored 1956 full window sedan delivery (code 56-1271). The car has no interior and no engine and transmission. The body, chassis and glass appear to be in reasonably good shape. The vehicle is grey in color and I think was built for the Air Force and has a color code SP1. My question is how rare and valuable is this vehicle? How much would the restoration cost? Would I be able to sell it for a profit after restoring? In inventory, he has a 350ci crate motor and auto transmission we could put in the vehicle.