I believe it's stock, it's aged just like the rest of the engine bay. My main concern is the tire sticker. I can't tell if it's stock or not, but it has the 7.35x14 tires and AG, unlike SS cars which came with AH. If that were the original sticker, does that mean the car is not an SS? I feel it odd that one little sticker would disprove a whole car, especially since this car came stock with a Muncie like an SS. Thanks!