I have a 2003 Cobra with Magnaflow catback exhaust Part # 15644. One of the mufflers was damaged. Does anyone know what the Magnaflow exhaust system replacement part number would be I'm guessing its Part # 13216 or Part # 11226 but I'm not really sure.

Also should I just replace both mufflers?

 

How old is the exhaust? Ideally you'd want to replace both mufflers since a new one will look and sound differently than one that's been on the car for more than a couple years.

 

the mufflers were installed in 2003/2004.