When I had my first CJ5 Jeep years ago (no tailgate) the rear tire mount was cracking the sheet metal at the welds of the back panel. So I drew up some plans and a local HVAC company welded me up a tool box that I drilled and bolted in place of the rear seat. Then I bolted the spare tire mount through the sheet metal to the back of that locker box eliminating the stress and it made for one heckofa bass box for my stereo. This was one of the first things I did when I picked up 'Black Betty' in more recent years and it only cost me only $50 clams
The parts shop that stocks part for Skylab II will not have parts for our year/model of Jeep
We cannot accurately judge the trajectory of a speeding critter (cat, dog, sasquatch)
Record heat waves and floods only occur when we visit that area
After looking, reading, thinking of building a bix, at a local feed store I found a lockable BetterBilt tool box 32"x12"x12". It's just a little small lengthwise to hit the outside seat bolt holes but I decided to mount it on 3 pieces of 1/4x2 extended out to capture the bolts. Set up so I can turn it around if wanted. Secure, lockable, waterproof, thick gauge and only $110 for everything.