So I have made a ring for the bigger rear drive shaft yoke.
I made it out of 1/4" plate. for a perfect fit, it needs to be tight to make a good tig weld. This is what my dimension's are 3.945 ID x 4.750 OD perfect to drill holes for a nice solid mount. I tried to upload a picture but had some weird 404 error when I clicked on it?

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]