I don't want to be the lone nay-sayer here, but this almost sounds too good to be true, and you know what they say about things that sound too good to be true....
That seems like a huge amount of heat dampening, but I will still be hoping that it works.
On another note, what happens with all that heat that is normally soaked to the engine bay? It goes through the exhaust system, right?
Reason I ask, is that I recall a gearhead/moderator on another forum who used wrapped ceramic coated new headers and loved the initial result. However, they burned out on him in just over a year. After his comparison with a similar set that was not ceramic coated, he concluded that he would not get the ceramic again.
This is admittedly hearsay at this point, but from a source I consider trustworthy.
I'm still very interested in your results, however.
Mike: 1997 SE w/ 183K, aka White Horse
, Gutted Airbox w/K&N, drilled 180* t-stat, tint all around, clear corners w/SilverStars, "PONTIAC" light up tail, PEMs, NGK TR55s