Larry Griffin responded to this thread soon after my first post. He is having problems posting here. He told me to look at the a833/rpo my6/np440 as an option. He installed one in his pickup using the shifter and lever from a Dodge van and shift rods from an 'E' body (he believes) Mopar,with a 2 inch hardwood spacer for the rods to clear the trans. I'm sure he'll chime in once he can post.

Here are a few links I found last week:

http://www.classicjunkyard.com/new_process_a833.htm
http://www.slantsix.org/articles/4-speeds/ODA833fourspeed1.htm
http://www.hotrodders.com/forum/picture-4-speed-56525.html
http://www.hemmings.com/mus/stories/2005/03/01/hmn_feature17.html
http://www.autohobbydigest.com/a-4spd.html
http://www.68cuda.com/tranny.html

63ChevyII
Stovebolt Media