At our club meeting this week I talked with a guy about a locker he had. He said he had a posi unit out of a Scout D-44 and it would work in mine. Does anyone know for sure? Also I read awhile back in one of the many 4-wheel mags I get that when you go to 4.56 or lower the carrier is different, something about ring gear thickness. If this is the case then If he had 3.73 and I want to go with 4.56 or lower will the locke fit?