I do know that the bolt pattern is 5 on 4 1/4.
Mark Williams axels.
The axles are held in the housing by a locking plate.
I pulled the rear cover off and found a old Direct Connection posi unit.
Then I checked the gear ratio and found a 5:13.
I still am un-sure what the rear end is.
It say's Dana 60 on the housing.
Any one know what the difference is between the Dana 60 rear ends??