Place a want-ad in the Swap Meet. There is a member who sells NOS/NORS u-joints.

Regarding non-North-American u-joints, I had a serious problem with a new u-joint from South America (where I think that 235s were made and sold after they ceased being produced in North America). I realized why the eBay seller was selling it for such a small amount when I found that I could not get it onto the splines on my enclosed driveshaft. My guess is that metric tooling/measurement during manufacturing was not within tolerances for a North American fit?