This might have a DJ-5 chassis.

https://sacramento.craigslist.org/cto/d/auburn-jeep/7074853766.html

“I have a 1951 Willy’s M38 project Jeep for sale.
-Buick grand national V6
-Holley 4 barrel carb
-Munci 420 transmission
-T18 transfer case
-Dana 44 rear
-Dana 27 front with disc
-Power steering
-32 inch Interco swampers
-new hummer seats (4)
-new gauges/wiring kit
-Aluminum radiator with a fan
-Clean title in hand

*Cash in hand exchange only
$3,900 o.b.o

Everything is here to have a solid Jeep just needs to be put back together, trailer needed for pick up. Email with questions.”