L79fan - Your car appears to be equipped with RPO ZJ5 - the "Exterior Decor Package". This was a very popular package on 3rd gen Novas since it only added $51.00 (1970 dollars) to the sticker and gave the coupe front fender louvers, as well as both the full-length body side moldings and the bright window moldings. It included bright drip rail moldings on the sedan, but not on the coupe.
The side moldings from the ZJ5 package were, of course, also available as a dealer-installed accessory.
Since SS models came with a double pin-stripe on each side, very few SS Novas were optioned with the ZJ5 package.
EDIT: SS coupes were more often optioned with the ZJ2 "Custom Exterior" package. This cost $97.95 and also included the bright window moldings, but not the body side moldings. ZJ2 also included simulated front fender louvers, rear trim plate, lower body and rear fender moldings. The bright drip rail moldings have always puzzled me. They are listed as being a part of the ZJ5 Exterior Decor Package, but only for sedans (4 doors). They were part of the vinyl top package for coupes, but not listed anywhere else that I can find, even though I seem to remember seeing them on some coupes without vinyl tops - another small mystery!
BTW, there was also a bit of overlap between the ZJ2, ZJ5 and SS packages. Even without either of the "ZJ" packages, the SS came standard with front fender louvers (with bright louver edges on the SS) and a rear trim plate (black on the SS, bright accents on all others).
EDIT #2: I'm not aware of any "selected option" codes on the 1970 cowl tags.