This is my solution to the heat problem... Reflectix:
Picture shows only the top of the tunnel is covered, but I covered the whole tunnel.
Any of you who got rides from me at 7/7/7 know that you still get hot feet... It is because I did not get a chance to cover the deep part of the footwell before the event, nor the area behind the pedal, or above the feet.
Any area that is covered with this stuff is completely cool to the touch, and my engine puts out some SERIOUS HEAT. I got the idea from the corvette crowd, who have been using it for years to insulate the center tunnel (dual exhaust pipes pass right under the driveshaft, so there is quite a bit of heat). You can buy it at Home Depot. Look in the construction supply area where the insulation stuff is. Sometimes it is hard to find, and when you ask for Reflectix, you might as well start talking chineese - but it is there.
I also have an extra pack that's more than enough to do somebody's car. If no place close to you carries the stuff, send me a messsage.
To top it off, this stuff is cheap and very easy to install, holds its shape, and is pretty flat.
http://www.usa7s.com/aspnetforum/upload/894129987_CIMG1565%20(Small).JPG