I'd get that carpet up personally, just to see the extent of the rust. If those are the original wings, which they look to be, I have a feeling your gonna have some very nice rot underneath them
The zones usual opinion to everything is 'give up, its not worth it' on everything, but I'd be following that advise with this one and try sourcing a better condition shell and using that one as a donor or sell a few parts to fund the project as it goes.
Obviously, these are bought as projects though so you wanted to get stuck in in the first place

They can just turn into massive restorations, just to get the shell right, and by the time you sort that, you end up in the money pit area, as you have too much to loose if you stop
