The fender mount turn signal indicaters are 66 Cuda only. The grill is 66 vailant or Cuda, can't tell for sure which from the picture. On the Valiant the part of the grill, that goes around the headlights is light weight "tin". On the Cuda it is cast metal. The front fenders don't have a second "crease" below the body line, on your car (66 fender). The 64 and 65 had the "crease" (different angle between the two years).
The complete front clips will interchange between the 64,65,66 cuda and valiant, and I'm pretty sure the Dart, also.