As I have said in other reviews, excellent quality, yet lacks install instructions. Watch the Youtube video of the 5th Gen install and you can't go wrong. If you have a 4th Gen and only 1 hook to attach to up top, there is some vibration on washboard roads due to lack of mounting location in the vehicle, not much to fix that other than another hook (some 4th Gen 4runners have 2) or a stiffer heavier panel, and I think even then it may vibrate.