I was using thermal blanket as a generic term. Lots of different types out there.

I think this one is like the eastwood one if I recall.
http://www.stockinteriors.com/HeatSound.asp?Itemid=4783&kw={keyword}&gclid=COiPrp3x1LYCFQNlMgodZB4AdQ

One tip that I will pass on is be carfull how thick you get under the foot pedal you may need to rebend it a little to get full throttle.