Unless you are building a factory correct truck, I would convert to the sm420 transmission. They are plentiful and you will have a granny low. So 2nd (normal starting out gear)and 3rd are constant mesh and syncronized, 4th gear which is direct drive and synchronized as well. First and reverse the truck must be stopped for you to shift into.

Last edited by sstock; 07/22/2018 3:05 PM.

1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY Gallery
Video of the 261 running

1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration