Didn't think about the 834b and looks like you're right about the bulkheads and front spool. I just did some looking though and the stock 834b sprockets came in 12t and 13t didn't they? This one is 14t.
As for the front diff...maybe the sprocket is from the Thorp ball diff but I still believe the diff halves are from a MIP trans. I also don't think it'll work as a front ball diff since when it's assembled the sprocket is nearly centered, not off to one side like the spool. Doesn't mount in the bulkhead either.
The ball diff was pinned together through both halves and the sprocket and the more I look at it the less I think it'll actually give any opposite spin. The holes for the diff balls may be spaced a little to far out. I can't find any spare diff balls small enough to fit to test it out....going to have to take apart another trans to borrow some.
Thanks for the help.
