A833OD inspection results... thoughts?

There was a place i think in florida called "southern gear" years ago where i bought all the hard to find parts for my A555 since chrysler discontinued everything for it. They may have good deals on the A833 O/D parts since they should be more common. New process also made the A833 O/D and it was used in chevy pickups and vans up thru i think 1984. Internal pieces i think are the same, though input shafts, output shafts, and cases were different. I believe the forks and side covers were the same too.
So far as I was able to figure it out;
The only internal hard parts between the GM and Mopar that are the same is the low gear, and the thrust washers.
All the tooth counts are different and you can't mix them with anything found in a Mopar box. I found a stash of GM boxes once in my search for spares, and the stash was cheap. But they were a no-go fit on the input, so I had to pass. Thinking back, the stash was probably cheap enough that I could have spliced two inputs together and have been set probably for life.
You could put the entire GM geartrain into your Mopar box,and with the Mopar mainshaft and tailhouse; but then you'd be left with trying to support the input pilot, and fitting a GM 10 spline disc. And don't know, if the splines on the GM input will be end up in the right place to be driven;I think not.
Another option is an adapter bellhouse