After listening to my ride sound like some 5.7 Hemi with a sore throat...and believe me I can't have that...I decided I better take Big Boy in for a check up at my local muffler shop. After a visual look over and some discussion with their mechanic and shop owner..it was decide that some moderate upgrades were past due. So that weekend I contacted Flowmaster and they recommended the 50 Series HD muffler with dual outlets..plus I needed some partial replaced of rusty pipes. Sure I could of gone with a deleted muffler and ran straight pipes or even a Super 10 but my neighbors would of stormed the house carrying torches. So after a long Saturday and about $1K later I had that sound once again when I first bought the truck back in 2011.