3-Speed trans ID
The Hurst catalog has a nice section on transmission identification. If you go to:
http://www.mrgasket.com/hurstmain.html
and select the Hurst transmission ID chart link you will get an excellent pictoral and text description of various autos, 4-speeds, and 3-speed transmissions.
This allowed me to identify my 67 Lemans 3-speed as the Ford version
Good luck!
Steve