I would think it was part of an option group? Definately was available though. Common knowledge that the 71s were available with color keyed, but I have never seen how they were even dictated. Rubber bumpers required them of course, but how did some chrome bumper ones come with or without?? I have a copy of the salesman order form for 71 barracudas, and no where on it does it mention where you could choose a color keyed grill with a chrome bumper.