sorry my mistake, it was a 860. It was a 08A on the tag could have been a repo tag I suppose? It was presented as a Z/28. I could not see the casting date on the housing, ( It was at a car show, not on jack stands or a rack). He let one of us go underneath with a small light and see the stamping on the axle tube, but there wasn't any it was smooth. I went under just to identify which housing, (860).