Yeah I think it's worth it to do the bedliner and hush mat. I insulated my whole Tracker, doors, rear fender wells ( lots of noise comes from there ) rear floor, back door, everything I could get into and it makes a BIG difference. I used a roll of this sound deadining mat I got from JC Whitney, It's about 3/4" thick. I also used the stick on stuff for the rear fender wells where I have my 6x9's mounted, and same in the doors. Of course mine is a tintop, but I think anything will help on these rigs. Much quieter and more solid feeling especially the doors. Worth it. I really want to do the headliner too someday. I saw a show on restoring old hot rods from the late 40's and early 50's, and as they were pulling one apart they found bunches of old newspapers inside the panels including the doors. Nothing new, all hot rodders want improvement!