Years ago, when my neighbor remodelled her house, I cut eight pieces out of the carpet she was throwing away.  I used the carpet from the back of my van for a pattern.  I keep these piled up on top of the engine cover and they do a good job of keeping the sound down.  Also handy when you must crawl under your van or when you want something comfortable to sit on.

Joe/Albuquerque

82 Diesel
gettin close to 300k