I will just address the visible rust issues on the shell....... 250 +/- honest labor hours piecing it together using new aftermarket metal, pick a price per hour, and add up the parts..... that does not include any cowl, hinge pillar, or front rail issues...........plus you need decent doors, fenders, ect
someone here can correct me if I am wrong; but if a 4 door uses the same rails and pans, I'd be on the lookout for a clean solid donor, and use the entire belly and rails as a unit ........ obviously a 2 door donor would work, but would cost more and the rebody nazis would be on high alert