A setup like
this would be easier. This is how the factory setup was done on the '55-'59. The switch itself is the same as the 3 speed and Hydramatic, only difference is the mounting bracket and the activation lever.
It would be interesting to see how the switch attaches to the shift linkage levers on the steering column.
So it could be adapted to fit a 1954 Chevrolet panel truck.
Just have to figure out where to put the back-up light.
