That thing is 6 bolt wheels. Its a half ton J10.
They come with D44 front and rear. The rear has slight passenger side offset as its AWD.
does it have low range? The lever is under your right leg under the leading edge of the seat.
It should also have a vacum dial lock in the glove box.....letteraly cardboard box....
This thing lock the xfer case to be 50/50 split.
In open opperation the front axle gets 20-30 % off the drive.
It can be turned into a 2wd selectable.
But them parts are way hard to find anymore.
The chain drive xfer cases in these will stretch and skip indise the case.... the front drive shafts like to come off and eat the back corner of the TH400 trans missin.
That trans is an odd ball as well.
Round bell house not the diamond top like in the chevy/GMC
so there is an adaptor plate to make the chevy stuff work.
This would be a good thing for uprade to say a 700r4.
The AWD works great as long as its tight and the vac lines have no leaks.
We added selectable lockers to a 4door with that set up.....wow be shure the thing will stop or you could be up a tree!
I mean WOW locked locked and locked...