I know this is an old thread but I had to chime in on this subject. My car is also a 67 RS,SS and had no Carpet Guard. I am the original owner and was not aware there was anything like a Carpet Guard until I seen it in a parts catalog, when I was doing my restoration. At the time, I brought up the subject on Team Camaro and over there, everyone said the Carpet Guard was standard. Over here I notice its the other side of the coin. I got a Carpet Guard for the restoration, put never installed it.
Roger