I've pondered this idea for awhile and I figured I'd just wait to see what company would produce them or it. Them being Diffuser Fins or a more aggressive Diffuser all together. Well, I got tired of waiting so I designed and produced my own Diffuser Fins (pat. pending). They are rough but I will be taking them to my Paint & Body guy to clean up the imperfections which is mainly in the paint. I think they came out rather good. I am using the original rear valance found on the Scat Packs, SRT's, and HellCats.