To the best of my knowledge, it is ASC that makes both the spoiler and the side skirts on the pace cars. We are all waiting for ASC to provide this as an accessory through the dealers..... The promise is that it will be available after the first of the year. Do you believe everything you hear????
You are in fine company. There must be about a dozen or more that are waiting for one too..... me included. I have not found any leverage with ASC yet.