Mule,
I had tranny trouble in my 55 first series, so I put in an SM420. You may know this, but Napa and probably others can give you any combination of u-joints....big to little, little to big, etc.
I went to a junk yard that puts all there used drive shafts in a bus for people like us to dig thru. Just pick the right length. It is easy to pick the right length once you get the tranny in. The length doesn't have to be perfect either. Hope this helps - Scott
