I had a '72 1/2 ton 4x4 that had a positraction in it. IIRC it was 3.07 ratio. I had to work on the rear end a couple times replacing clutch discs, and it was a one-piece differential housing.
So that might be an option for your search. The ideal thing would be to swap out the whole axle if you can find a suitable one, as opposed to messing around with yours.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.