Word. Judging by the build quality on everything else, it wouldn't surprise me to see hacked-ass work under there.I would really be checking the frame out something seems fishy there. Just odd why they would only raise driver side of the box floor and not passenger side, hopefully it's just a bad box. Hate to see you put all this work in and have a bad frame, just my opinion.
Not digging on OP at all here, but whoever built that thing in the first place had no business being within 500 feet of a garage.