401 Nailhead with transmission. Removed this engine and trans from a running and driving Riviera that was rusted out beyond repair. It has been sitting in the garage for the past year. It is 100% stock and just needs to be cleaned up. Had plans to use it but I have a 425 Nailhead and don't have anything to put the 401 into. Open to offers on it as it is taking up space in the garage. Joey at 860-942-2377 or PM here on the HAMB