That part is called the " Apron " Is't the one right onder the grill. I wanted to stamp holes in it. I came up with this Idea after I painted my rig. I'd cut out two nice rectangled slots and tac in some tight expanded metal behind it. That way it wont look like something is missing
aprons are the pieces between the front fenders and the hood. the lower section under the grill is the valance.