From what I can gather, 29, 31, and 32 are the big input bearing cases, and are hard to find. 10, 23, and 27 spline cases are small bearing, and have to be machined and have the input swapped out if you want a 31 or 32 spline doubler. Well apparently WMS makes a 23 spline doubler in addition to the 31 and 32 spline ones... So am I correct in assuming that all the small bearing cases share the same bearing and the shafts are swapable? That seems to be what I'm coming up with in my searches. Anyway, it looks like it would be a lot cheaper if I could buy a 23 spline dodge case, or perhaps just the input. If I get the whole case, I can sell my 10 spline case (dodge had passenger drop 205's right?). If I just get an input, I can swap it in to my existing case with the existing bearing with no machining. So how hard is it to find these dodge pass-drop 23-spline 205's? I think they were supposed to be behind the automatics, but I don't know what years. Anyone have any sources for one? I don't exactly have any contacts in the dodge world. Just wondering how common they might be and how much $$ I might be able to pick one up for.