Everything was stripped down. I had the engine block sleeved back to standard, and replaced all parts. The transmission was gone through and re-sealed. All brake components, seals, and bushings were replaced. I have two drive shafts. One original Detroit Style, and One U-Joint Conversion. I am not sure which I will use, but the Detroit has all new components. The rear end is the original, and has new bearings, as well as seals.