On the '68 I had to replace the rear wheel lips, trunk dropoffs, center of trunk floor, driver side toe pan, and upper dash due to skin rust.
Had to replace the tail pan and right quarter skin due to collision damage. We replaced the left skin in order to properly blast, repair and rustproof that area.
The car was lifted for blasting at a 45 degree angle by the front subframe. The doors still opened and closed, which is really good for a stripped convertible shell.
Although sheet metal is not that expensive, labor in fitting is. And the original stuff is better fit and quality, so I saved as much as possible.
The car in the photo is really, really rusty. I see a lot more than $4K worth of panels alone that are needed just to bring it up to a solid shell.
Sure, it's possible, but it won't be financially viable.
Vikki 1969 Goldenrod Yellow / black 400 convertible numbers matching