I added some sound deadening material to the roof today, before the car gets shipped off to State Of Mind Customs tomorrow for the headliner installation (among other things).   I’ll write more about State Of Mind Customs in future posts.  I’ll add additional sound deadening material to the body once it comes home from State Of Mind Customs.  I included some pictures and a demonstration video that illustrates the affects of adding sound deadening material to the sheet metal on your car’s body.

Sound Quality Demonstation Video:

Before:

After: