Be warned that these grilles are not injection molded. No one is making the injection molded versions yet. BE&A has talked about making them, but so far...no go. The repro 71 grilles that I've seen so far are total junk. Worse yet, they don't hold their form in the heat.
I'm holding out hope that Mike at BE&A will change his mind and make the molds for the 71's. If he doesn't then Goodmark might eventually step up and make them. I'm not holding my breath.