That’s definitely the door that’s missing. Not sure how they got it out, but the rest of the box looks untouched as far as the welds. Maybe they cut the end of the rod off or something then pulled it out?
The big question now is how do I get it working properly again? I guess I have to try and fabricate something, which would include the lever on the outside. Try to find another housing that still has the door intact, or go aftermarket?