And, I might add, I think that if you're going to "gut" an Airstream, I'd rather you did it to one that's well on it's way. Why destroy a perfectly good Airstream, when there are so many that are already half torn apart? And thus, you will find trailers that need a lot of renovations such as new axles, floor replacement and windows.
Here's one that you could get for a song I think, and it's already gutted. You have to buy windows and fix the floor, replace the door lock and who knows what else, but all within the realm of possible. Want a project, this is it:
67 Safari ruff
The skin is all in decent shape, and it has all the vent lids, plus the bath is there, mostly. If you're handy this is one that could be brought back to life.