Another solution using parts from Home Depot:
20-Gauge Simpson Strong-Tie
Simpson Strong-Tie 20-Gauge 1-1/4 in. x 9 in. Strap-LSTA9 at The Home Depot
Cut the piece in half. Make a few bends. Drill a couple of extra hole then paint it matte black to match the front grill.
Also added a few foam strips to the lower half of the license plate to protect the painted clam surface.