A few years ago, my buddy Jerry (Years of experience working on classic Chevy Cars/Trucks for a living) installed a Car powerglide in our buddy Dave's truck so that Dave's wife could drive the truck more. I took a bunch of pictures at the time. If I recall Jerry used car style mounts on the front of the transmission and moved the truck trans crossmember further back in the frame and modified it to support the rear of the transmission. He also reworked the car shift mechanism to make it look and work as though GM had installed it.
Here's the link to the pictures..
https://photos.app.goo.gl/y13hfZUUzpadFgML9Also here is the info I got from Jerry at the time, also included with the pictures.
"Transmission is a 53-54 Powerglide it's desirable because it has a kickdown where the 50-52 doesn't. The shift collars is also 53-54 Car and the handle had to be modified to clear the steering wheel. The shaft that runs down the collar had to be shortened about an inch to fit the truck column. The shift levers and accelerator linkage also had to be modified a little. The truck cross member was used but modified to hold the rear transmission mount and side mounts had to be made to fit the front of the trans to the truck frame. Also needed the Powerglide trans cooler and lines."
Hopefully this give you another option for a more traditional trans swap.
Of not at some point I saw some info from GM from the 50's regarding retrofitting automatic transmissions, hand controls and power steering into late 40's and early 50's cars and trucks at the dealership to make them easier to Drive (Sell) to veterans coming back after the war that were amputees' so these kinds of swaps were done at the time.
~Mongo
