If it's real that's a little scary and almost sad. My concern would be to the strenght of the fifth wheel hitch and it's strenght where it joins the Airstream frame. One of the big indications that there is a problem is all the tape or tar where the older body joins the new one. That would be a major stress point. The trailer thay made the hitch section out of appears to be a early 60's made out of alcad.
1959 22' Caravanner
1988 R20 454 Suburban.