Honestly, Doug, I think you'll do well to get $10k for it in this economy. Yes, there's a lot of parts and it's a '71 Cuda and the date-correct (but not numbers-matching?) block is valuable, but it's still a big project. I just sold my '70 Challenger R/T to another member here and mine had a machined 440 with almost all the engine parts (steel crank, rods, pistons, Lunati cam, rebuilt heads, Edelbrock intake, brand-new Edelbrock carb, new balancer, new water pump, etc) and a lot of new interior parts. It needed some rust repair, but nothing major - just around the front and rear windows, a small patch on the lower right and the wiper bucket on the firewall - and fresh paint. I got $7,000 and was happy to get that. Like yours, mine was mostly in pieces and I put it on the truck with interior and trunk full of parts.
Sorry - wish I could be more helpful.