Just found this thread. I just bought a '40 1/2 ton. From what I can tell it's a bit of a Frankstein truck with parts from other trucks bolted on. It has post '47 rear fenders, a '53 235, the trans appears to be a Muncie SM420, pre '55 from what I'm reading (no fins on the housing). Thus far I haven't been able to ID the rear end. There's no torque tube on the drive line. I think I've decided to do a V-8 swap, possible a 327. Would the SM 420 work with that engine? Would I need an adapter to mate it to the 327? If the SM420 isn't a good choice any suggestions? What should I be looking for on the rear end to ID it? I've attached some photos I've taken so far. I'll be pulling the body off so I can sand blast/powder coat the frame and possible box it.
