The product itself is fine. Processing is good, but aggressive sound? Not as much. Used on 08 5.7L 1500 sheep. Anyone who knows these trucks, they literally have a 3 foot muffler and a resonator behind it. The factory is almost as noisy as these at high rpm. Don't get me wrong, the sound is not bad but it's definitely not what I expected from the description, the reason for the 3 stars is exactly that. Good silencer BUT the description is very misleading in my version.