I've decided to go with a home made "Lizard Skin" and some home depot insulation.
If $$$ wasn't an issue, I might go with a better mat, but would most likely stick with the home made lizard skin.
I haven't tried any of these products yet, so I am basing my decision on what I've found on the net.
Good luck!
Check these out.
http://www.hytechsales.com/insulatin...additives.html
http://www.jalopyjournal.com/forum/s...amat&showall=1
http://www.hotrodders.com/forum/alte...in-103610.html
http://www.quietride.com/acoustishield/heat-shield.htm
http://www.sounddeadenershowdown.com/