I just got some rattletrap by fatmat, it was the cheapest non-asphalt based butyl product I could find on ebay, 80 mil thick. It is alot of work to remove everything, then have it applied. The song "Roll it" takes a whole new meaning lol. My back is killing me from sitting bent over inside the trunk for 2 hours lol. But it is worth it at the end once everything is back in place.