Sounds like a nicely updated Buick 3.8L

https://sandiego.craigslist.org/csd/cto/d/1948-cj2a-willys/6556979131.html

“I have a 1948 Willys for sale, the body is in great condition, very minimal rust and one small dent, really clean for the age. Bought this Willys not running and rewired it put all new gauges in and replaced a few things under the hood, added a 4 barrel intake and edlebrock carb, electronic distributor, new radiator and electric fan, threw all new spark plugs and wires In it. Leland Clutch, PP and TO bearing, Hooker fenderwell headers

Buick v6 3.8l with Crower RV cam .505 lift, 310 duration, Manley stainless valves, Forged 9.75 pistons. Dana 44 rear axle with Detroit locker and warn locking hubs, front I think is a 35 has a true trac and warn locking hubs 5.38 ratio. Has 99% tread Mickey Thompson Baja mtz 33×12.50r15. Has a t-90 from a 72 Cj 4 speed with granny low, has a terra low kit in the transfer case 3.5 to 1 Dana 18. Original seats. I have a full soft top and doors for it and also a bikini top. Fun little cruiser, walked up John Bull no problem, goes all over truckhaven. runs good but could still use some tuning in. Can’t afford to keep an extra car anymore and no room.”

Appears to have rust along the passenger entry side.

https://losangeles.craigslist.org/sfv/cto/d/47-willys-cj2a-for-sell/6535531914.html

“1947 one-quarter ton 4 wheel drive Willy’s overland motors Inc., Toledo Ohio USA. Street Legal, runs well. Will consider all serious offers. Has 4×4 and High-low gear, licensed, titled and registered in California. New brakes, tires, rims, gas tank, dashboard and gauges, emergency brake, summer top, seats, as well as 2nd windscreen. Buick odd fire V6. Does 60 mph easily. Tool box located under passenger seat and comes with roll bar and locking hubs.”