Has an F-Head.

https://wyoming.craigslist.org/bar/d/1947-willys-cj2a/6700250430.html

“47 CJ2A, hoping to trade for something a little easier on the old man’s bones, I built this Jeep from the ground up, has factory rebuilt M38A1 F head engine, T90 3 speed manual, Dana 18 transfer case, both of which have been gone through this year, all new steering, all new brakes, new 700×15 ndts, M38 Artic Top with doors, currently reworking the seating arrangements, capable of 100+ mile day trips, looking to trade for grand cherokee or something similar, value $4k+”