It must be age creeping up on me, but I prefer the exhaust to be quieter than that video you posted. I originally had a generic muffler shop muffler with cat delete on my 6cyl. Eagle. It wasn't too loud and sounded pretty good. However, when I moved from CO to TN I was pulling a 2,000 lb trailer and it took it's toll on the muffler and got too loud for me. I went to a local muffler shop and he installed a Jones Exhaust Turbo Tube. It was quieter and had a nice deep tone. When I did the AW4 swap I needed to have the exhaust redone and went to a muffler shop near my work where I had did the swap and he wouldn't work on it without a cat. I told him to install one, which I was considering anyways. I kept the Turbo Tube and it is much quieter but not as quiet as stock. Still has a nice deep tone. I have the same mufflers on my V8 Eagle and they sound horrible, like Bubba's 75 Chevy truck. I plan on replacing them at some point because it is WAAAAY to loud.