I'm running the stock catback with headers and no cats. It's pretty much perfect for anyone wanting as subdued, no drone exhaust. Cruising around town you can barely here it in the cab, but the nice thing is the second you pop on the highway and cruise it's dead silent. The performance of the stock muffler has been questioned, but I doubt it's much of a hindrance. If you want it loud at times just add an electric cutout and be done with it.

 

lol yeah i got it off my trailblazer.... It doesnt weight as much a the stock silvy muffler either..