This has some updates and might have been a forest service wagon.

“Multipurpose Willys Wagon 4 wheel drive. Very unique wagon with 265 Chevrolet small block chevy connected to a T90 3 speed transmission and Dana 18 transfercase. The wagon also includes a warn overdrive system and a Power take off (PTO) that is connected to a winch. Brand new wheels and tires, working heater, CB radio, electric fan, auxiliary gas tank, fire extinguisher, tow bar and hitch. Wagon was designed for survival. Comes with multiples gun racks, believed to be a forestry vehicle in Montana.”

https://sandiego.craigslist.org/nsd/cto/d/1953-willys-wagon/6445602483.html