right now i have a pypes exhaust catted x with spintech prostreets and i want to get rid of the x pipe. my options seem to be buy a mac o/r h and have the mini cats off the x welded in, mac prochamber o/r, mach pro chamber with cats, really tired of the x pipe sound. i heard a gt with borla and a prochamber, must be what God has on his stang great sound