until you've driven a car with lizardskin it is hard to believe (s/c h/c). the 56 big window i just finished is quieter than any of our new ones. with no interior the floor got only mildly warm during test runs. after finishing it is super quiet and rally stays cool inside. it is well worth the investment. i use it on the early vettes to help prevent stars and make them quiet. as said earlier..... foam is for houses