Are you thinking of the Ford OEM setup, or an aftermarket kit? I honestly have no idea how the OEM setup is configured but I could imagine it would be difficult to install into a car that doesn’t have the provisions for it, although I could be completely wrong! Plus the OEM kit isn’t actually cut outs...they’re more like adjustable baffles. I thought about putting an aftermarket kit in my 2004 Mach, but I just got rid of it, replaced with a 17 GT Premium. For a stock setup it’s very nice but it’s definitely not the tone I had in the Mach 1 with a Magnaflow midpipe and catback system. It would be nice to go from to with the flip of a switch. Needless to say I’m following this thread...