Wow.What a challenge.How do you come up with all the parts for this?B.B
This car really does not need to be saved and IMHO the asking price is reasonable and on par with what these cars have been selling for when they do come up for sale, which is not often.
As for finding parts, first, you contact the seller who is a member here to see what he has (he has a lot of parts) and negotiate a package price including parts.
Second, you contact fellow '71 GT enthusiasts like myself to see if we can help out with any parts and/or provide guidance on where to find them. For example, I have a good door for the car as well as some surplus NOS parts.
Third, if you can, you buy a 2-door '70 or '71 Fury parts car with good quarters and a good door.
Fourth, you hunt for NOS parts and make a point to attend the Carlisle show every July and make a point to talk to vendors to see what they have that they may not have brought to the show.
Lastly, eBay, eBay, eBay. Search every day.
Just my 2 cents.