Since the car is an early pre x code car, here is some good reading to do your research. Use this information and see if it matches what you find on the car. http://www.camaros.org/diffs69.shtml
A real 69 SS should have:
1. 12 bolt rear end.
2. Multi leaf rear springs
3. front disk brakes
4. dual exhaust with the previously mentioned plate on the driver's rear frame
5. ss hood with insulation
6. Rear brake line regulator valve found mounted on the frame rail under the driver's door.
RS equipmetn includes: http://www.camaros.org/options.shtml#id
Back up lights in the lower rear panel with holes stamped in the panel for the wiring.
1.00 dia" hole stamped in the fire wall to the right of the brake booster for the vacuum lines.
Mine is an SS/RS so if you need any photos for comparison just let me know.