Are you SURE that the muffler is a x-design? See post #3 for the pic Magnaflow sent me on the SRT8 muffler. I would have moved the attachment over here, but I can't figure out how to download it from SRT8OC and I can't find it on my puter. http://www.srt8oc.com/forums/showthread.php?t=5410&highlight=magnaflow
Weird... I went back to their site and now they say the muffler is TRU-X. I am going to have to find out if they have changed our cat back over the last year. I will be pissed. http://www.magnaflow.com/02product/shopexd.asp?zone=all&id=7251
Magnaflow now shows the SRT LX cat back muffler as TRU-X also....now. I know that when I bought mine in 1/07, their site did not mention any X anywhere. I contacted them by email and they sent me the pic shown in the link on post #21 of this thread. Now they say the muffler is tru-x on their link. I have sent them an email to see if anything has changed. Some us may or may not have tru-x depending on when we bought our system.