M
So I was thinking of spray foaming my doors an bed sides an tail gate. Anything pretty much that is hollow. So I took off one color panel on my doors a drilled a few lil holes. The foam has made such a diffance in sound when u knock on it. An when u shut the door it is more like shutin a car door. ( more postive close) also did the tail gate an the same thing with that. So know that I no it works I'm going to get a bunch of other cans an do the whole rig that I can. Ill post pics an what not when I'm completely done.