It’s a mix of parts.
https://portland.craigslist.org/wsc/cto/d/tualatin-1947-cj2a-jeep/7541002431.html
It has 2A and 3A parts with a overhead valve
CJ3B Running Gear
Family Owned for over 45 years
Good Off Road Rig
Engine turns over
Hasn’t been used for a couple of years
95% Rust Free Body
Comes with Roll Bar, Tow Bar, Spare tire rack
Newer Radial Tires and wheels
Extra 4 tires and wheels
Bill of sale only w/ no title
Would consider a trade
Old guy who doesn’t text or email.”