I am mocking up some parts for my rear suspension and was evaluating a rear differential I bought last summer. I was pretty disappointed when I saw this when I took the leaf springs off of it. These are 1/2" U-bolts already.
Passenger side, good to go.
Drivers side, not so much...
While I realize the u-bolts are not even captured on some rear diff's and do the job just fine I was going to use Global West's mono-multi kit 1038 which uses some plates on top and 7/16" fine thread grade 8 bolts in place of u-bolts or the OEM t-bolts.
I do not like the sloppy holes on the drivers side where someone got over enthusiastic with a large bit and power drill, and it appears the holes elongated from there even.
There was 1" lowering blocks drilled and tapped for locating studs or bolts but the studs to locate the axles were not found when I took it apart. I could move the drivers side leaf left to right 4-5 inches if I held the front eye and the u-bolts were only finger tight... although I do not know if they had been loosened prior to removal and just left snug.
My girlfriends little brother is a machinist and we are collaborating to make this right and I will be using a hybrid between what DSE and GW offer for mono-multi leaf conversions.
I'll post pics when we have some hard parts in hand.