My current setup is a Pacesetter header - OEM Cat - Vibrant catback with a 22" Magnaflow resonator welded in.

It's actually sounds pretty decent, but I am wanting it to sound even closer to stock. I'm pretty sure Vibrant is the quietest/deepest aftermarket muffler you can buy.

My question is would a stock SS/SC muffler quiet it down a little more without reducing performance? Also how would the piping match up for sizing? I believe the Vibrant is 2 and 3/8".


2005 LS Auto (Blue)
-M62 Kit with 3.1"
-ZZP S3 H/E setup
-Pacesetter armor coated header
-Magnaflow 22" resonator (p/n 10436)
-Vibrant CatBack
-TTR Upper and Lower motor mounts

the SS/SC (LSJ) muffler is dyno proven to flow the same as a Magnaflow muffler without all the noise. it has a 2.25 inlet and 2.5 outlet

you could also get the the SS/TC muffler which is the same muffler but 2.5 in and 2.5 out...