Another option is to get a 2wd gm nv4500 (these are cheap), swap in the dodge gas input shaft, and machine the adapter plate. That's what I did on my little 1/2 ton conversion.
http://67-72chevytrucks.com/vboard/showthread.php?p=6488778&posted=1#post6488778

Last edited by whateverpratt; 12/22/2014 5:14 PM.

Liquidated my projects
Now looking for a decent '47-'55.1 3100, 3600, or 3800