63-66 A Body metal splash plate ID

Trying to get a handle on the metal splash plates (front plate behind headlight and rear plate in front of door hinge) on the 63 to 66 A bodies, Dodge and Plymouth.

First does anyone know what years interchange? Only one I know of is 63-65 Dodge are the same. I'd imagine 63-65 Plymouth are also.

In another post, IDing 63-66 Dart license plate lights, 63-65 were the same, 66 was a one year only, then 67-72 were again all the same.

So I'm assuming 66 splash plates are a one year only for both Dodge and Plymouth.

I'd be interested in purchasing a set of splash plates (at least one frt and one rear - would purchase in pairs if needed) from a 66 Dodge, 66 Plym, 63-65 dodge and 63-65 Plym to confirm.