I have the Magnaflow 4 inch round mufflers in the mid position on my DD SC'd 18 R/T. exhaust is otherwise factory .. 2.75 pipe with factory tubular exhaust manifolds from my Scat.. so exactly like a 6.4/6.2 car.. idle is a deep tone and according to my neighbors sounds really good....I think so too... WOT is fantastic..1/2 throttle kinda blats ( is that a word ?) like straight pipes.. but that has soften a bit as a byproduct of recent Jon Moored tuning.. they were pretty quiet at first and took a bit for them to break in but I would use them again.. I don't like raspy or really loud..