The center front bumper (brace assembly) brace on my car has tab (?) on the back side between the two bolts that secure the center of the front bumper. The tab is about is about 2" long x 1&1/8" wide with a 7/16" x 1" slot. The AIM does not show this tab or anything that might be attached to it. I have other technical publications none of which show this tab. Does anyone know what this tab is used for ? Thanks