Well..... you can save anything i guess. I think it's worth 1000- 1500 if you want to get into that deep of a project. The guys are right, it will be a lot of work and money.
In my opinion, you have 3 ways to go.
(1) Offer him a grand and see if he takes it
(2) Buy it and use it as a daily driver and/or exchange all of the better parts for your other '71 and resell.(You would have to rebondo it up and make it look good like they did 10 years ago.)
(3) Find a rust free body and forget about rustorations.
On a final note, Damnnnnn.......... it sure looks good plum crazy!
And, why would anyone strip and crush a car like this anyway? I'm not a mopar savior, but it's very fixable.
I guess some people look at the $$$$$$ i guess. To each his own.
I'm from B.C. originally, so i've seen my fair share of the rustbucket cars out there, this one isn't that bad comparing to a lot i've seen out there.
Good luck and keep us posted.
Just my 2 cents.:-D
Tom.