UPDATE: Still Available.
(08/15/2022) If you need a 3B body now, this might be an option. Chassis does not appear to be included.
https://www.facebook.com/marketplace/item/1258025758345986/
“Brand new body for a 1960’s Willys Jeep body. No wait for shipping, come pick it up today. Fits 53-64 CJ-3B (stamped WILLS). Fenders, hood, windshield frame and tailgate all included.”