Don't know if we can get this thread to multiple pages or even several dozen but I thought I'd try. I know a lot of this info may be in the 6.4 Hemi thread but it has almost become too large to sort through. I, like most middle aged guys, like the sound of a nice low rumble from. Y exhaust when under acceleration but want a nice subtle sound when crushing with little/no drone. Don't want it loud or obnoxious. Just something a little more than what factory gives? After reading through Reek's post on the Mufflex and his unhappiness with the product I have Sort of turned cold in getting the Mufflex. What I'd like to start is a thread of what every 6.4 owner has for aftermarket exhaust. Whether just a muffler replacement or a full exhaust replacement or whatever. Describe what you had done, what product and the cost to have said product installed. Also, if you can post a video with good sound it would be helpful. Tell us what you got! If we can get traction on this thread maybe we can make it a sticky.?.? If a dumb idea no biggie.