Here’s another of the midwestern or eastern-made fiberglass flat fenders with the wide lip in the back. Listed as a 1953 CJ-3A, the chassis is actually a CJ-5 frame, so not sure where the “1953” comes from.
https://www.facebook.com/marketplace/item/491537236938944
“1953 Willys fiberglass body sitting on newer Cj5 frame, disc brakes,power steering, $1800 obo I will not respond to Is it still available”