Hy Lend-Lease 1.5 and guys, I looked at this from the jobber perspective, my old Victor catalogue lists their part number V49904 for the splined type, that translates to National part number 6358 which also translates back to GM part number 3686530. the Victor p/n for the non splined hub is V49799 that translates to National p/n 5850 unfortunately that does not translate back to the other GM p/n that Mike B supplied, but that number may have been superseded, hope that helps.
