When I did my live axle swap about 2 months ago, I also installed an SLP catted X-pipe and catback. The original catback was the Loudmouth II, which for me, was simply too loud. After about a month, I swapped the Loudmouth II bullet mufflers for a set of their "Pro-Flow" mufflers - which I much prefer. It is quieter, doesn't have that "raspy" sound of the Loudmouth, but still provides a nice tone at both WOT and going down the road.
SLP uses a "slip fit" setup that really makes things easy to install (and also allowed me to easily change mufflers). That goes for both the catback and the X-pipe. I'm very happy with the quality, installation, and sound. I'd recommend them to anybody looking for a nice setup for the Cobra (or any other Mustang for that matter).
FYI...my catback is the one that would fit 99+ GT/Mach 1, but they have them for Cobra's too.
SLP uses a "slip fit" setup that really makes things easy to install (and also allowed me to easily change mufflers). That goes for both the catback and the X-pipe. I'm very happy with the quality, installation, and sound. I'd recommend them to anybody looking for a nice setup for the Cobra (or any other Mustang for that matter).
FYI...my catback is the one that would fit 99+ GT/Mach 1, but they have them for Cobra's too.