This looks like one of the Acme or Brian Chuchua tubs. It’s a light tub, but surprisingly sturdy.

https://easttexas.craigslist.org/pts/d/mineola-cj2a-jeep-willys-fiberglass/6902004779.html

“I bought this tub and no longer have the Jeep it was going on. It is brand new with no holes. It’s for a Willy’s CJ2A but you could use it on other models. Comes with a new fiberglass hood. Absolutely NO TRADES. Serious CASH offered considered but if you know anything about these you know a new one is at least $2,000.”