i found a 73 duster on line, he's asking $13,000. Here is the description:
Plymouth Duster 340. Real "H" code Black Beauty with original 340. Pistol-grip 4 speed. New bushings, clutch w/ t.o. bearing, springs, sway bars, fuel tank, 8 3/4" rear housing w/411's, headers, 3" exhaust w/ Flowmaster...