This 3B chassis has a fiberglass body, though it is a low hood body. We’ve seen some midwest wide-brim fiberglass bodies like this a few times now. I’m unsure of the manufacturer.

https://kalamazoo.craigslist.org/pts/d/mattawan-1953-willys-cj3b/7540410294.html

“1953 Willy’s cj3b. Fiberglass tub, frame, axles. I have the transmission case but am missing internals. Complete transfer case, pto drive. Radiator, No motor. It is all disassembled.
Only body part missing is a hood. I Also have the title.”