I am being optimistic, or not.
A few factors, I found it difficult to locate actual sale prices, and when compared to my 62 Dart, which turned out to be rusted beyond belief once I got into it, just the body alone, if it was as solid as my 64 I would have saved thousands of $ and hours, and I bought all 3 AMD floor pans, which are no longer available.
The Sure-Grip/rear suspension/brakes for my 62 were at least 2.5k, the 4 speed pedals $500, wheels/tires, three of the things my 64 has already.
My 62 needed everything, windlace, rubber, seat belts, brakes, on and on, and it cost me.
I actually think it's not the smartest thing to sell it, but I dig my 62 way more, I have a love/hate relationship with it after what it put me through, ha!
Buy the best body you can find, or buy what you like and learn a ton along the way. I wouldn't change anything with my 62.
A friend has a rusty, crusty 64 Fury for $8k, nice color, copper in and out, 383 auto, radio delete, but it needs every panel, probably floors, all new interior, etc.
I almost bought it, but not again. Sitting next to my 62: