can you tell me how to tell if car is a real SS/RS
What year car are you asking about?
Where was it originally sold? US or Canada
If Canada you can get documentation of options from GM Canada based on the VIN number.
If it's a US car check this site for starters, and ask previous owners for any surviving documentation.
Post a pic of your cowl tag here, the members will help you figure it out.
Tom
I have 69 camaro built in L.A. Has back up light in rear pan but also has ss hood , delux int.
here's my cowl tag no. ST 69 12437 LOS 119381
TR 716 50 C
9 B Y 153