Here are some of the threads about using Fatmat to deaden the sound:
http://www.thorforums.com/forums/f17...ffled-897.html
http://www.thorforums.com/forums/f4/...egas-1504.html
The one sheet I purchased was big enough to cover the inside of the doghouse and still have a ton extra. Recently I cut it up and used the rest to cover as much as I could under the dash--at least what I could reach from the front "hood".
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