* Base vs. RS/SS Packages: The main visual difference stemmed from trim level. Base Camaros typically had a smaller, more subtle lip spoiler, often integrated into the rear bumper valance. The Rally Sport (RS) and Super Sport (SS) packages, especially in later years, frequently featured a larger, more pronounced spoiler that was a separate piece, bolted onto the trunk lid. This was largely an aesthetic choice to enhance the sporty look of the higher trims.
* Factory Options vs. Aftermarket: While some spoilers were factory options, many owners added aftermarket spoilers, leading to a wide variety of styles on the road. These aftermarket additions significantly expanded the range beyond just "two" options.
* Year-to-Year Subtle Changes: There were minor variations even within the factory-offered options from year to year (1970-1973), but the fundamental distinction remained: a smaller, more integrated spoiler on base models and a more substantial, separate spoiler on the RS/SS packages.
In short, it's more accurate to say there was a *range* of rear spoilers available, primarily differentiated by trim level and aftermarket additions, rather than just two distinct factory designs across all years and models.
