I suspect there’s an MB/GPW body under that diamond plate. Maybe even a chassis, too. Note the rear shock absorber.
https://boise.craigslist.org/cto/d/1940s-jeep/6655411227.html
“1940’s Jeep for sale. 350 V8 . Needs little carb work and steering pinion replaced. Engine runs strong. Fun project Jeep Come see! New battery.”