Sure it can be saved. Assuming the stub is the worst of the rust, and you are willing. Sub replacement isn't too difficult, just time and space consuming.
Looks like the rear window may be leaking too.
If I were after it, I would source a stub frame and plan the swap. Regasket/paint the...
Exactly. I like melting tires. I like blasting down gravel roads. I had a nice survivor for a little while. Terribly un-enjoyable. Not to mention it drove like crap.
Gimme beaters all day long. They are more fun.
That's okay. Not everything needs to be a full tear down to be an enjoyable car.
"Power over paint."
"Don't get it right, just get it running."
"Beaters are neater"
These are mottos I tend to live by.