You have keen eyes. I saw that one too, don't know anything about it. But if given the choice, I'd go for the earlier ones with the cheesy little Ansa stickers that burned off in about five miles.
I don't recall the now-popular Monza system being made when the Six was in production, nor the Falcon for that matter. I'd rather have the most appropriate period piece - like the Ansa or, for example, the Lucas Square 8 fog lamps.
Also, the tip diameter of the Ansa is slightly smaller than the Monza which I think is better proportioned for the back of the Six.