interesting to stumble across this thread today.......

My 46-72 GM parts book does not list either housing or hub for HO72. But I can say that dual and single studs are different part numbers. Axle shafts carry the same part number for 3/4 and 1 ton single or dual wheels.

I may be in need of a 5:13 carrier assembly or at least a pinion bearing if they are available. I looked up the bearing number but of course it's been superseded. It's a unique bearing and I suspect only made for Eaton. I haven't tried NAPA. My FLAPS closed up last Thursday and the parts man is retiring. He is a gem and will be sorely missed.

1951 3800 1-ton
"Earning its keep from the get-go"
In the DITY Gallery
1962 261 (w/cam, Fenton headers, 2 carbs, MSD ign.), SM420 & Brown-Lipe 6231A 3spd aux. trans, stock axles & brakes. Owned since 1971.