Cost? I'd love to do this in mine.I guess i'll be the first. After 8 miles on the jeep and 3 rock chips!!!! I decided to rhino line the inside and jams. The carpet was designed to come out. It has snap out pieces. All carpet came out in about 10 minutes. My game plan is after it is rhino lined put the carpet back in for the time being. You can raise the snaps (they screw in) to off set the rhino thinness. Here is what the inside looks like with the carpet removed. I think the sound deadening looks better than my JK. If you zoom in you can see the snaps.