This is a mix of parts. It has an F-head.

https://inlandempire.craigslist.org/cto/d/1945-willys-jeep-modified/6511593766.html

“I had no plans on selling this jeep, but need cash more than the Willys. It was modified for a movie.
The tub is a 1945 wartime MB jeep. It has newer tires, new glass, new regulator, and a newer rebuilt generator. It is 12 volts. The engine is a 1953 Hurricane engine. Has a T90 transmission. It is a driver, and is old, but is a blast. The carb leaks a little, but I have a brand new one that goes with the jeep.”