Close the front door then close the back door and tell me how tempted you are to do the back doors too? (cuz I’m tempted)Yeah, I am out of town but will post some at the end of the week. I personally think that it made a significant difference in the sound. There are about 10 recesses around the center of the hood, so I cut pieces to fill those. Then I removed the windshield wiper spray hoses and placed full sheets starting in the center of the hood. I basically did two rows, each with 3 full sheets, and 1 sheet was used to cut the shapes to fill the recesses.
I also put kilmat on the front doors and door panels. I reached as much of the inside of the door shell as I could with the speaker out. Each door panel probably got 2 sheets as well.