There never was an official R65RS, AFAIK. I have a 1980 R65 with a hand-laid fiberglass copy of an R100RS fairing installed, so I "tongue-in-cheek" call it an R65RS. The "real" R65 models that I know of are the R65, R65 LS, R65 GS, and whatever the official designation is for the cop bike with the RT fairing on it. The little fairing you have is an accessory item that would be dealer/owner installed and doesn't do anything to change the model designation.