I never considered that this might be a Chevy unit, for an old torque tube setup. That would explain the flange and collar on the back end, and the strange output shaft spline. It's 1 3/16"(or 1 3/8", have to measure again) x 10 spline. I got the output yoke from a Jeep & 4x4 shop, down in Salina.
The rear shaft is from a 64 Chevy pickup. I only had to cut a little of the spline stubs, to get the lengths right. It's basically reversed position, with the carrrier bearing cut off. I can't remember where I got the front shaft, but I think it's a 4x4 front shaft, given the small diameter tube.
That is the problem with being a packrat. I can dig up almost anything, but most of the time I can't remember where I got it, or what it fit.