Can these Fast backs be saved?

Yes, I figure I could buy a complete donor A body car for all the floors/rails. Roof is different possibly? I have a lot parts(doors, deck lid, hood)

So you’re just trying to save the roof from one of these cars and swap the rest onto an in-tact abody? It looks like there’s something to work with there (more on the red one, I think) but I’m not convinced that you would be much better off than starting with nothing and building one from scratch. There’s a lot of damage there, even on the a-pillars.

I admire your optimism and if you save either of these cars, you’d be a hero for bringing one back from the dead.