You might try Arizona Driveline. They advertise in 4wd Sport Utility magazine all the time. I think their web site is Gloeco.com . They made me a super beefy rear driveshaft, with 1310 ujoints. It looks pretty indistructable. They are also making my new front shaft, after I lost it somewhere on interstate 20/59 just East of Tuscaloosa!
Hope this helps
88.5 Samurai, SPOA,Rancho springs, Rocklobster, full cage, Schroth Harness belts, EZ locker, 32x10.50 Swampers, on board air, Weber, header etc...