64-65 Valiant/Barracuda shield (valance)

That's two different valances. The Valiant had the turn signals in; the Barracuda didn't (and didn't have space for them).

A '63 Valiant valance with the round turn signals might also fit '64-5 fenders, but I'm not fer sher.
The Barracuda valance will work. The only difference is the Valiant had the mounting tabs for the turn signals, and the Cuda didn't. There is room for the lights, and the tabs can be added.