UPDATE: The consensus is that this is likely a 3A.
This has a governor cable.
https://www.facebook.com/marketplace/item/661328837718525/
“Selling all late 40’s to early 50’s Willy’s Jeep CJ3A parts we have on hand. 1949 Jeep Willy’s parts jeep (no title no motor) Radiator Gas Tank 1- Solex carburetor 1- Carter YF carburetor (4 cyl) 2- seats 6- 15″ Jeep rims (vintage) Transfer case Heater Lots of miscellaneous odds and ends $700 for everything”