I had these installed on my 2016 Challenger RT and they sound incredible! These things growl on ignition and roar when you accelerate. The only reason I didn't give 5 stars is because of the loud droning sound at certain rpms. It isn't unbearable but it is extremely loud inside. I however think the overall monster sound is worth a bit of drone.
Great exhaust system
I purchased my exhaust system a few weeks ago and I love it. The only thing I haven't done yet is tack weld it to the frame of my truck. I will say though, I am someone who doesn't want my vehicle to be obnoxiously loud, while still being throaty and rumbles, and this was perfect for me. The sound is just what I was looking for and the throttle response gain was a pleasant surprise. In the interest of full disclosure, I had someone else install it, so it was very easy for me.