Great except for exhaust tips
I got the stainless dual side swept exhaust. It sounds good. Loud during excelleration. Quiet at idle. Not too loud when cruising. I believe it increased horsepower (or maybe it just sounds more powerful). My only complaint is I don't like the dinky little bolt on polished stainless tips. For this price tips should be welded on at factory and twice the length.
Gibson Metal Mulisha Exhaust Systems
The exhaust sounds and looks great. Beware, it is very loud on the highway when the truck downshifts to get up a hill when cruise control is on. But it sounds amazing. One of the pipes had a small dent that I had to beat out with a hammer in order for them to fit. Also, one of the hanger locations didn't match up with the factory location so I'm not using that hanger. Other than that, install went easy. You won't be disappointed.