Has a Pinto engine.
https://austin.craigslist.org/cto/d/1951-willys-m38-us-army/6663931530.html
“Putting my 1951 Willy’s M38 up for sale… Runs and drives great. Obviously not 100% original. Upgrades include more powerful Ford 4 cylinder engine, rancho shocks, and bigger tires. 4×4 and high-low work great. Recently repainted. Never registered – sold with bill of sale. Delivery available.”