Like tvBlazer78 said, I bet there are many threads on this topic. For my C10 I used FatMat. I bought a 100sq. ft. off Ebay, it was cheaper than their website and I used about 30 to 35 sq. ft. I think. I have the rest for my other projects. I really like the way it conforms and sticks on very well. I used the roller included in the box, but broke it fairly easily. I then used a large deep socket and rolled the contours on the floor. I have some pics of it here.
http://www.flickr.com/photos/hikingd...7594445283108/
also here is the fatmat site.
http://www.fatmat.com/
Might be worth comparing.
Drew