As noted from a previous post:
Got my floor (firewall) insulation material from Moore Power
www.moorepower.com in Waverly, NE. The best investment I ever made--bar none. Almost zero heat transfer through the material--you can put a blow torch on one side and feel nothing on the other side. The stuff is used in stock cars (about 1/8 in. thick, cut with scissors). I went from burning the #@&% out of my right foot within 30 miles from home and using the cruise control just to keep my foot from being medium rare to "AHH!, let's go for a long ride, honey!"
BTW, I also used peel 'n seal in the doors, floor, and roof for insulation and sound proofing.
