UPDATE: Still Available.
(03/16/2017) Interesting project. Maybe good for a race rig?
https://seattle.craigslist.org/tac/cto/d/aluminum-jeep-cj-7-tub/6538000828.html
“Narrowed aqualu aluminum cj7 tub. 48″ wide. Has seat mount , shifter mount and steering rod mount. $1500 obo”