Like any restoration, it pays to start with a very solid car that is very complete. There are allot of parts available now. Though, like any others, some are not cheap.

My 71 GTX was a GY8/GY4. The following owner changed the color FJ6 Green, which was the right move IMO...other than it was ~somewhat~ misrepresented once it went on to retail dealers.

http://www.rkmotorscharlotte.com/sales/inventory/sold/1971-Plymouth-GTX/135202