Seller provides lots of information. Has an f-head.
https://boise.craigslist.org/cto/d/ontario-1952-willys-jeep-cj3a-runs-great/7181301047.html
“1952 Willys Jeep CJ3A runs great
Bought this jeep as a non-running project, it had been stored indoors for 23 years.
It now runs great and is in very good condition.
Compared to most classic jeeps this has minimal rust.
It has a few little dents and battle scars, and would look really sharp
with a new paint job, unfortunately I’m not good at body work.
As you can see it has been slightly modified. The original L-head engine was replaced many years ago with a good F-head jeep engine. This gives you a little more horsepower. Because the F-head sits higher in the engine bay a hole was cut in the hood to make room for the carburetor.