8.2" BOP buick olds pontiac rear differential

in the 1964-1971' buick , olds , and pontiac rear differentials , they use a 8.2" differential but it is differential than the CHEVY GM 8.2" , the BOP's use a different setup , the axles , posi traction unit , wheel bearings , seals , etc are totally different from the GM 8.2" here is a part list for the BOP 8.2" set up , 19674-010 is the eaton posi for the 8.2" bop , the motive gear axles are MG27131 , the rear wheel seals are 8594S national , the timken bearing kit is DRK321HMK, the rear wheel bearings are RW507CR timken / industry #