Agree, if you can chuck a bit more in the budget get the megstretch, little bit more expensive but a breeze to work with and a better overall finish.Get it from here.
http://www.megavanmats.com/apps/webstore/products/category/94901?page=1
If you phone them they will let you know how much you will need depending on how you plan on carpeting it (panel seperate etc.)
Also they offer a forum discount as well.
http://www.megavanmats.com/forummembers.htm
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