Insulating (Dynamat) the Inside of the Doors (1967 Mustang)
This was a fairly simple process, but again the only posts I found where "just do it" with no useful instructions. I used Dynamat 10435 14.75 x 12 inches, 4 sheets per box. using 12 inch width I was able to use 3 strips (front to back) with only a small gap that needed to be filled in the end. So here are my quick tips to help you make this process easier. The doors have limited access space so cover the floor or something easier to work with first to get some practice with the Dynamat. Wear long sleeves as you'll be straining to reach into the doors and the metal will cut you. Gloves for the same reason if you're comfortable with them, but you have to do a lot of finger work. I decided to not pull the glass out of the door because it only gives slightly large access. Instead roll the window all the way up. Also feel around inside to make sure you have a full surface to mount to. Do what you can to clean the inside of the door a day before and allow it to dry compl