Most likely a ’46.
https://charlotte.craigslist.org/pts/d/willys-parts/6711591718.html
“late 40’s willys parts These are rough!!! but lots of good and hard to find parts really like to part out but will sell lot as a whole..
multiple differentials,transfer cases,transmissions,plus a few blocks included, have been sitting outside for a long time so don’t expect brand new parts”