Hy Trainmna673, according to my Bower/BCA catalogue the tapered replacements for the Hyatt barrel bearing A11950 are M111048/M111012. The inner hub seal is GM p/n 3708819 that crosses to National 5453, give your supplier your seal dimensions to confirm that number is correct. This information is supplied assuming that the original rear axle is still in the truck, hope that helps.