70-72 Duster Grill to Rad Support Piece

I don't know the name of it, but it goes between the rad support and the top of the grill. It runs the width of the rad support and appears to bolt to each fender, in addition to the rad support and grill. I'm cloning a 74 Dart Sport into a 71 Duster, and the 74 is different.
It can be seen in this picture I took from a magazine.
IMG_1962.JPG