Seller doesn't know too much about it, but here is a overdrive 3 speed for sale in Texas. It is however, missing the solenoid. I don't see pictures of the other side to see if the governor is there or not. This is the post 1965 transmission with 7 bolt side cover and synchro first:
http://houston.craigslist.org/pts/1234985750.html
This is the same as the transmission that I used.
Regards,
steve
New Orleans