The 2nd pair are for 66 Valiant, if that’s a small amount of scalloping on the backside of the bezel. That would indicate that they are Valiant, the scalloping sits inside the tines of the Valiant grille. Although they will work for 66 Barracudas, they are not as deep as the Cuda units, and the Cuda units sit flat against the grille, because the grille is flat all the way around.
