I think a lot of the Pre 1970 Dana 60 3/4 ton truck and 1 ton van rear ends had the three inch axle tubes I use to ask the junkyards if they had any 3/4 ton truck rear ends with damaged axle ends for sale, I would tell them I neeed some of the parts from the insides

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)