A-D I knew instantly, but Jocelyn beat me to it. I've looked the picture E a couple times over the last few days thinking maybe it would come to me but no. The only thing that seems vaguely familiar is that hole with the concentric C shapes around it. Seems like I've seen that somewhere. Usually on injection molded Toyota parts, there's an embossed part number, two five-character alpha-numeric sequences separated by a dash or space sometimes with a 2-character suffix, something like 31210-30240-84. Can you find a number like that on it anywhere?