65 Dart front bumper on a 66?

How easy or hard would it be? I know you need the valance, assume you got that....and I assume the brackets and/or mounting locations are different. Can the valance be adapted to bolt up? what about the width of the bumper?

Looks like the side scallops on the 66 fenders are the biggest obstacle, probably have to swap for 65 fenders huh