[ADub]

My truck had a home made headliner, wood covered in vinyl. It actually looked good, so I left it. I put a layer of rattle trap on the roof, but its covered by the headliner. I put it on the underside of the dash too (upside down), its sticking in place fine. Yes I put layer on top of layer on the floor and firewall.

The heat dissipation is very noticeable compared to stock. World of difference. The sound deadening is pretty impressive overall, but the exhaust drones pretty bad between 1600 and 1900 rpm. Gonna have to do something about that