These babies are 50-60 years old now, and most have gone to the great beyond and become Campbell's soup cans. Whatever is still readily available is either already built/restored or an overpriced "I'm sitting on a gold mine" rusty shell that'll end up going to the scrapyard when they don't get their price.
Ya gotta get out and beat the bushes. You can't just rely on Cracklist. Or Marketplace. Or Kijiji, or Ebay. Get out, talk to people, and be willing to expand your circle and travel. That's the only way anything is going to happen. And honestly, you may need to become receptive to the idea of something other than an A body. F/M/Js are still undervalued, and can be an equally fun car. And Dakotas, especially early ones. Similar sizes, weights and the same powertrains will fit.
Git goin'. It's not going to get any easier, or any cheaper.
