All 69 SS's should have:
* Power front disk brakes
* 12 bolt rears (I'd quickly question a 10 bolt SS car and wouldn't purchase one)
* Proportioning brake valve on driver's side sub-frame (most SS's should have it)
* Dual exhaust
* If manual shift, SS's will have 11 inch clutch (not 10.5 inch) and starter for larger (14 inch, 168 tooth) flywheel
* 8 Inch harmonic balancer
* Quadrajet carb (except L-78, 396/375, which used a Holley) with 1/4 inch return line from large in-line gas filter.
* SS hood or ZL-2 cowl hood (rare from the factory)
* Speical SS wheels or Rally wheels
* If SS-350, it will have double hump heads
* Trim tag should have X-11, X-55 if it's small block...I can't recall the big block trim codes.
* Which included, "bright" (or chrome) trim for wheel wells, grill, headlights, and louvres (the gills in front of your rear wheels) and around the tail lights...but most 69's had all this.
* Big blockers had the rear valance painted black
* SS cars got the painted and/or taped hockey stripes in either black or white.
I'm in the 69 buisness (buying junk, selling classics) and for every 10 cars with SS badges, one is bonafide. Engine codes are a key to eliminate the pretenders. But once I've determined the car (which is for sale) isn't a true SS, I use that for bargaining power...for instance: "you advertised this car as an SS...I see from the VIN it was originally a 6 banger car. Now I feel my time is wasted and you've deceived me or someone deceived you. But, you have a nice car and I'm willing to offer the going rate for 69 6-cylinder cars. How does half what you're asking sound?"