I decided to install sound deadening which should also provide for a more comfortable ride. I went with the Kilmat 1.3mm product which I purchased from Amazon.
I first cleaned the area as best as I could and then started testing the best way to use the sheets. Once I knew how they would fit I peeled off the backing, placed them and then used the roller to finish it off. I had to cut a few odd shaped pieces but that was easy with scissors.
I’m really pleased with the finished product. One box was enough to do the entire floor including the wheel wells.
My Mustang Journey 