Too much info for these boards....but you could combine the RS option with SS or Z28. It then became a RS/SS or Z28/RS. RS was a style and trim package. SS and Z28 where performance packages. The badging issues could be a bit confusing.
Example of Z28 combined with RS option
Notice the nose emblem for Z28 and Rally Sport On fender.
You sir... are the man.
Thanks for chiming in.
I was hoping someone would know exactly what they were talking about.