when I was looking for a tailgate - I had found *one* mgr who
made a gate with a removable matching insert (not the one shown by a poster).
Unfortunately, it's been a while - don't recall the mgr.
BTW - You can make your own insert (cheap & easy) not locking, but will keep your treasures out of sight.
Stock (factory) tailgates:
Besides the obvious "handy" features, one of the main reasons to go to an aftermarket TG (in the past) was factory "non-locking".
Major non-traceable, high demand, EASY theft item!
Be sure you are happy with whatever security measures you have for your factory gate.
Factory TGs = *WAY* more valuable to thieves - than the stuff in the bed!
Replacements may still cost you serious $ - *after* ins deductible.
;)