This is great info. I knew about the padding but didn't know about having to do the entire interior. How do you get it remain in place on the roof and doors?
The foil tape used to join the sections of mat together and seal all the edges to the door itself help keep the mat in place, as does the door handle and plastic door panel on the '70 E-Body.
For the overhead section, I used contact adhesive to glue the 1/2" thick mat after deadening the roof sheet metal resonance with Dynamat. I was careful to keep any material that may affect my headliner fit clear of those areas.
