Installed on a 2008 lexus gx470, I built a mild overland rig for my wife but it was missing that nice exhaust note from the v8 that comes in these bad boys, the exhaust has a nice and mello rumble at idle and is opens up when you put your foot in it, cruzing at highway speeds you hardly notice it so you cabin is still nice and quiet, this really helps tho when offroad and crawling up obstacles, I can now hear the engine and not rely on looking at the RPM gauge to see what the engine is doing, its all about feel and sound when your exploring with the family and this definitely makes it more enjoyable, install took less then 30mins and all the tubes and welds are stainless steel and so is the muffler, for a cat back system this is one of the best bangs for your buck, sure you can have Joe Shmo at your local exhaust shop weld a muffler in for a couple hundred bucks and have no idea how long his welds will last or how the muffler will sound, avoid the hassle, FYI the exhaust note heard on the video in the description is pretty darn close to how it sounds on the car, the wife is happy and like they say ""happy spouse, happy house"".