So I got a great deal on a Magnaflow catback (part #15769) off eBay so I figured I would give it a try even though it doesn't specifically list the MKS as a compatible vehicle. Well....for the most part it fits. The tips are not exactly centered in the rear fascia, guessing it's a little different than the Taurus. Also, the Maganflow engraving doesn't sit exactly at the top of the pipes, they are rotated towards the fenders slightly. Overall I think its fine I just need to keep taking my OCD medication
As far as the sound, at start up there is a slight burble. In low gears there is a nice deep tone, not crackly or overly loud. At cruising speeds there is absolutely 0 drone and the sound level difference from stock is negligible. When you stomp on it infidelity makes some noise, but again nothing crazy and doesn't sound ricey. I should note that I have catted LMS downpipes and also left the 3rd cat in place.
Here are some photos.
