I have a pypes O/R H. Curious what the X sounds like. Does anyone know if I can swap out the H for the Pypes cut and clamp X instead of buying the whole setup again? American muscle says that the cut and clamp is only for stock mid-pipe. If this is true does anyone know if I did buy the O/R X could I leave the down pipes on the car from the O/R H and just put in the X portion? In other words are the down pipes on both O/R H and X the same? Any help, thanks.