I have a 396 engine that came with a 67 convertible I purchased. It was not in the car, previous owner paid to have it rebuilt but he said his guys had trouble with it and removed it. After disassembly the crank and all the bearings were toasted, like they started it dry. Crank was already ground .060 so it was trashed, cylinder walls look great. Do I sell or rebuild? What is the value since it seems ls engines are what most are going with.