Sorry I can't help you with the numbers, but I'd too make sure the vin was legit no matter the condition. I'd take a 71 Duster too but I don't want to be sold a Duster cloned into a Demon, but I'd take either in the 71 Model year. But $3000.00 would be considered most reasonable even for a lot of rust, I've found that a pretty solid one will bring 4-5K, especially a 340 car, even without the drive train ! Good luck.