Not sure how similar, but i recently rebuilt my 1929 transmission. I also rebuilt the u-joint while i was at it. will need a press or at least access to one to remove & put in the bearings & bushings.
it is pretty easy to do, as long as you take your time, document and photo the disassembly. i bought the rebuild kit (shafts, bearing, etc...) along with the new bearing retainer and it all fit perfectly, if you need new gears that will be a treasure hunt to find them, or finding and paying someone to make them.
1929 Transmission Check/Rebuildthere are a lot of photos, and i have a TON more not in the forum
just remember these are very simplistic mechanical devices !! nothing like a modern.