Today I went to my local machine shop that has done driveshafts in the past for me. He said he could do it, but didn't really know how it was put together, and could not guarantee anything. I need it to be 1" shorter. I called another shop that specializes in driveshaft shortening, they would not touch it. I then called Driveshaft Specialist in San Antonio,TX. They can't do it there, but work with a shop in California. Will give me a totally rebuilt(new u joint,carrier bearing),fully balanced, shortened shaft for around $525. Looks like I may go that route. They will also check my measurements out to see if any other stock shaft will fit, that would run about $367, depending on shaft.
I have my SD shaft still to check, but then would need balancing to be correct, so may still be better off with the rebuilt unit.