Yep, Amazon,
Dynomat and Fat Mat have several products that are similar - I think the Fat Mat had a better price on Amazon - check around. I tried "Kill Matt" this weekend but it was not as heavy duty or as sticky as the other two IMO – so I would use inside a vehicle and other together two under floors and under hood/engine compartment since I think they will hold up better.
To maximize sound and heat you want two diff types of insulation (IMO). You want to start off with a heavy asphalt base (50 oz?) with a thick aluminum backing. Its like 1/8 inch thick or so. Then cover it with what I call "Fatmat" (but both make on version) and its 3/4-inch thick foam with a sticky side and thick aluminum front side. That will do the most good for heat and sound IMO.
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