The foam is in ceiling and in 2 doors, and so far it sounds more quiet. I can tell now for sure that the remainder of the sound is coming from the doghouse and the related area. So I am going to do that next. Perhaps I will use Hushmat because it's not as thick.
This stuff is "elastomeric foam pipe insulation" from what I can tell. It's highly insulating and it is apparently evironmentally friendly. It does smell funny though. But if it doesn't kill me, I saved a lot of money over Dynamat or all Hushmat.
The headliner is a PITA to put back in the truck BTW.
