Having owned more than my fair share of muscle cars over the last four-plus decades, I know the difference between a V8 and any six-cylinder engine and what is and isn't possible between them including the exhaust note. I also know your stated reason as to why people buy exhaust systems for their Jeeps never entered my mind. The reality is that I had a much more pragmatic reason for adding an aftermarket exhaust to my JL. Here's the deal. I watch my two grandchildren (5 yo grandson and 1 yo granddaughter) 8 to 9 hours per day, three days a week every week during the school year when our daughter is teaching in her elementary school classroom. Consequently, I use my remote start a lot because I need/want the vehicle's interior cool when it's hot outside and warm when it's cold before I strap the kids in. I remember the day when my grandson first started the Jeep with the remote start and how we both looked at each other. Did it start?! As we stood in the living room of my home, neither of us could tell whether the Jeep was running because the stock exhaust was too quiet for us to hear! At that very moment, we decided the Jeep absolutely needed an aftermarket exhaust system.
By the following week, I had the MagnaFlow system on and.........problem solved! Does it sound like a V8? Nope and I never expected it to, but, that said, it does sound one hell of a lot better than it ever did stock. So, yeah, with its slightly louder and much deeper bass tone, I'm happy with my purchase, it is serving its intended purpose (we can now easily hear it running from inside the house), and an added bonus is that, in my view, it dresses up the rear view of the Jeep very nicely (see photo above). 
Bless your heart! You do know that a true dual exhaust isn't the same as one muffler with two buttholes, right?
Posers be like that.
I got the Machforce Hituck SS 2.5in Catback
