I used a material called FATMAT (got on amazon) and put it over the existing material under doghouse and also stuck it on the floorboards from underneath and in front wheel wells.
It has made a huge difference in engine and road/tire noises. It’s a great material relatively easy to cut to size and apply .At least on my coach. I like the adaptation of the doormat you did Nice job imo every little bit helps decrease the decibels which is good.
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Into the great wide open,under them sky’s of blue
Outlaw 38MB
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