Muncie transmissions were available with a BW overdrive from 55 through 65. Also known as an SM319. This transmission is non syncro first gear and can be identified by the 4 bolt side cover. In my opinion it would not be a very good match for your van.
There is a better option which is a Saganaw transmission with the BW overdrive which was available from 66 through early 70.
It is full syncro and would use your same column shift arrangement along with the correct driveshaft yoke.
The Saganaw unit can be difficult to find and pricy. It can be identified by the 7 bolt side cover.
For the record Warner made the earlier transmissions for Ford, Studebaker, and others. Borg Warner made the OD units.
Fred
Last edited by rfs56trk; 11/20/2016 5:33 PM.
