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Old 08-15-2012, 10:24 AM
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1971BB427 1971BB427 is offline
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Here's what I used:
E/O 12 in. x 15 ft. Self-Stick Foam/Foil Duct Insulation-FV516 at The Home Depot

Self adhesive, dense gray foam, and foil backed. It cost me about $30 for the whole interior on my car. Two 15' rolls, and really reduced the heat transfer on the firewall.
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