Sound deadening report
Day 1: sound deadened the trunk and tire well. BIG difference.
Day 2: sound deadened the front doors, reaching through the speaker hole sucked. A moderate improvement.
Day 3: sound deadened the rear doors. Surprisingly, this may have made a bigger difference than the front doors. I think because your head and ears are closer to the rears than the fronts.
Used Harmony Audio butyl rubber, a mid grade low cost option, and don’t regret it.