Also, correct me if I am wrong, but once you install the Roush valance, you can't go back to stock.
Similar, but it has been modified for the extra tip which will be the one controlled by the active systemHopefully Roush will chime in on this....has anyone noticed how the active axle-back looks like a stock muffler with a second tip added? If you look at the video on YouTube of the yellow stage II you can clearly see stock appearing structural ridges (bead rolling) on the back of the muffler. I could be completely off base, but who knows.