Just an update. Talked to owner. The Europa is packed in a storage unit with stuff stacked all around it. Setting up a time to help him unpack the storage unit so I can inspect the car. Also, supposedly the twin cam was ready to be put back together (cylinders deglazed, crankshaft turned, bearings and rings purchased, etc in 1980). He says all these parts were oiled up before being put away. So, if it was stored correctly, it still may be in good shape. It sounds like the engine, transaxle, rear lid, and gas tanks are the only parts taken out of the car.