Here is a quick clip I found of my Jeep's exhaust system before I sold it. It is a 2011 Jeep Wrangler (JK) Rubicon with the Dynomax Ultra Flo cat-back system and 87 octane Superchips tune. LISTEN WITH GOOD HEADPHONES OR SPEAKERS
I believe it is the best sounding exhaust for the 3.8L JKs. Fitment could have been a little better, but the sound could not be beat without sounding like a Honda. Loud enough to sound aggressive with some crackles, but not too annoying on the highway. I highly recommend this exhaust to anybody with a 3.8L Jeep JK.
Filmed on a Samsung Note 8