No reason not too if you want to deaden some sound inside the truck but I am kind of planning on going a little further. Was thinking of using either lizard skin heat and sound liner or Al's HNR. Lizard skin is two products, one goes over the other... Al's is one, and about half the price of one bucket of the Lizard skin product, so right now it's winning in the budget department, lol. I'm planning on putting some sound deadening sheets inside the tailgate and doors as well, then doing the inside of the truck from tailgate to firewall, and then doing the sidewalls, roof of the cab, and roof of the shell as well, After that put down carpet, a good headliner, and make my own side panels because the OE ones are grungy and I'm just trying to get rid of anything that carries any funky smells with it. This is my second go around with a K5 and when I did my original one I was broke as heck and there was nowhere near the parts support there is now but there is no way I would pay 450 bucks for OEM repop side panels when you can probably make them for around 75 - 100 bucks worth of materials and some time. I needed an excuse to get a staple gun for some motorcycle seats anyways, lol.