I thought the only difference was the coating on the swivel ball. That either would work with either housing.
When did D90's get ABS? that would be the other difference, though I can't think of any reason you couldn't use an ABS axle assembly on a non-ABS vehicle.
Four wheel drive allows you to get stuck
in places even more inaccessible.
62 88 Regular
67 109 6cyl NADA x2
74 Lightweight - The Antichrist
95 DI 5-speed
95 D90 5-speed
97 D1 Automatic