I see your suspension mods and choice in this thread:
http://www.steelsoldiers.com/showthread.php?118556-Axle-wrap-with-a-bobbed-deuce&p=1506413
There may be more but I made it through. What I noticed missing was a consideration of the 923 dogbone links? I know this is a deuce forum but the geometry of a 923 rear axle would seem to be perfect for a Deuce. It would be like the four link aftermarket referenced in the link above...but on steroids.
The alignment of the drive shafts is the issue. The best operating drive shafts maintain an angle that is parallel to the output shaft of the transfer case all the way through their travel. While a long ark has less wear than a short angle, the angle (in relation to the transfer case) is always changing. The argument in the thread is that with so little spring movement...changes in angle are moot. He has a point...but it is that you have a nearly rigid rear suspension with little travel.
I've considered this with the five tons (923) and bobbing one. Lt. Dan, if you understand the way a four link operates, look at the dog bone from a 923. The four link would allow a coil spring or air bag for more travel and flex, while maintaining drive shaft position.