This is a cross post everyone. I'm putting this here just in case you didn't know these were available. They just came out and figured since no one seemed to know where to get this axle, aside from Dutch or Moser, I'd display it here.
Chromoly D44 rear axle shafts by Alloy USA.
10 year no questions asked warranty.

http://www.drivetrainoutlet.com/Products-Scout_Rear_Axle_Kit.html

Let me know if you have any questions.