64 Dart Fuel Filler tube

Thanks Sandy and Tincup, Can anybody tell me if either will fit. The interchange on the gas tank is 64 - 66 Dart and Valiant. 63 uses a differnt tank.
With different sheet metal on the bodies would the Valiant match up to the car quarter panel. I appreciate the info, Craig

63-66 Dart, Valiant, & Barracuda should all be the same...