If it's what I think...attaches to the ends of the lower grill to fill corners if you don't have bumper filler.Can you provide pics where they fit? Near the bottom of fender, I don't see where they bolt up.
I think it only attaches to lower grill but fills out front edge of fender behind bumper. Would be for car without plastic filler or absorbers on front.It has been so long but I though they were on the fenders maybe the grill filler