I used the factory asphalt stuff from Ames in my bird. I just put carpet in the goat and used the cheaper "rubberized" stuff from Ames and I like it better. The asphalt stuff has a top and bottom and it turned out the passenger front piece was cut upside down so the asphalt had to be up. The rubberized stuff is easy to work with an you can flip it either way. Just my 2 cents...