Interior sound deadener

Amazon has clones of dynamat that are way cheaper. The main difference that I have found is that the aluminum foil on the clones is thinner. Don’t know how much that really matters.

You can also buy aluminum furnace tape much cheaper as well for seams.

Buy the biggest box you can for your need, as the pieces are larger.

I stuck it everywhere where I could see, floors, inside firewall, trunk floor, under door panels. It really made a difference. Inside of car is much quieter when driving.