Not sure if that helps. It´s not a auto tranny but with the OD I run in the same problems on the 41 Sedan and ended up to fab my own "sub crossmember". Just to give you an Idea:

http://img154.imageshack.us/img154/6408/bild0852fp.jpg
http://img154.imageshack.us/img154/6792/bild0826wc.jpg

http://img154.imageshack.us/img154/4481/bild0877dh.jpg

The rubber mount is (I confess it) of a 1943 Jeep.

Frank