Welcome to the site! You picked a good year to buy, I've got a '67 RS/SS too. The '67s are easiest to verify because all the info is on the trim tag. You can check all the codes and other options on this site, it's a wealth of info: www.camaros.org
Check out this page in particular: http://www.camaros.org/numbers.shtml#67Codes
A rally sport will have a 3L code on the cowl tag, an SS 350 will have a 4P, and an SS 396 will have a 4N or 4K I believe. There were some early SS cars built at the Norwood plant that did not get the 4P code stamped on though.
Do a search in the Tag Team section and General Tech and you will learn lots of ways to verify whether it's a real SS or not. The trim tag is the easiest way on '67s though. Good luck with the car!
Ben's collection of Super Sports (so far):
- '67 Camaro RS/SS350, dark blue, black deluxe int, 4 spd - nickname: NemeSS
- '96 Impala SS, black, all stock, wife's daily driver - nickname: MaSStr
- '91 Chevy SScort
, silver, auto, 4-dr hatchback, looks strikingly similar to a Ford Escort