Should I call it quits?

A pillars aren't reproduced as far as I know.

Take a look at these http://www.forabodiesonly.com/mopar/showthread.php?t=199439, a member has some A-pillar sections available.

But, unless you're skilled in fabrication, that one may be too far gone. Not sure how hard it is to find cars up there, but that one's going to be a ton of work. Sheet metal is one thing, when it gets structural like that its usually time to look for something else.