A year or so back I repaired a '98 46re 4wd that had lost lube and basically welded the O/D unit solid. Replaced the bad parts (int. shaft incl.) with stuff from a diesel trans, ('97 IIRC, was all I could find used locally). Other than needing a different piston spacer ring, it went together without a hitch.

In order to know what you want, you'll probably have to find out what you don't want.