Tom:
Per you request here is the info re the reflective material. From a previous post, long long ago:
Insulation and Carpet
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First, Heat and Acoustical mat,
part number 14720, 60” x 36”, was used to cover the rear bulkhead and other areas of the interior. This product does NOT have the shiny aluminum surface, but does have an imbedded metallic layer for heat dissipation. It is about an eighth inch thick, rubbery, and self adhesive.
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Second, Aluminum heat shielding,
part number 13590, 24 x 48, was used to cover the engine side of the removable bulkhead / firewall insert and the underside of the rear clip above the headers.
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Third, Insulating Mat,
part number 14110, 48 x 48, was used on the rear bulkhead, over the Heat and Accoustical mat. This product has an aluminized surface on one side. It is about a quarter inch thick. It was held in place with
3M #77 spray adhesive. Generally it was glued to the carpet, shinny side out.
Here is the link to Jeg's site:
13590 - JEGS High Performance
As a point of information, with 700 miles, the amount of heat held within the rear clip is just not as great as I feared. Heat build up is actually greater in the engine compartment of the Cobra, yet even there it has caused no problems. My main concern with the GT was the area directly above the headers. The stainless muffler does not generate as much heat as one would expect and with the opening directlly above it heat build up does not seem to be an issue.
That is the reason I opted to use the heat shielding in a rather modest manner.
Of course ours is a rather modest power plant. With a 600 HP fire breather the story may be different.
Essentially the same product is marketed by several manufacturers.
Hope this helps.
Chuck