I just read thru
http://www.gmheritagecenter.com/gm-heritage-archive/docs/Chevrolet-Trucks/1946-Chevrolet-Truck.pdf

If I read this correctly, there wasnt a 2 spd rear end option for a 1.5 ton truck. It was only for the 5000 and 6000 series. Is that true?

There is definitely 2 shifters in the cab, so when I receive the truck tomorrow I will be scouring the truck for proper serial numbers. engine, trans, rear end, cowl etc.

It also showed the hydrovac was avalable on the 1.5 ton as an option.

Im kind of excited actually to figure out what exactly I have.