Check with a dealer. Those pieces are available. I had to replace one on the Cougar after a little accident. It was reasonable cost, already shaped to the correct curve and painted white. Just had to trim to length.
2007 Tundra DC 4X4 5.7, Alcan custom rear springs, 2009 Cougar 245RKS, 370 watts ET solar, Victron BMV-712, Victron SmartSolar 100/30, 200AH LiP04 bank, ProWatt 2000.