I have a 1976 Cadillac Eldorado Convertible in very good shape. It\s the one with the 500 engine and fuel injection. It seems my ECU is dead. I have found that the original part number is 160-8339 and the reman. number should be 77-8339. But despite several attempts to locate a unit I can't find one. Can someone help me find one? I live in the USA but have my Caddy in Sweden and would like to get it up and running while there during the summer months.