Hello, If you buy the carpet that is made for your truck it will be formed to fit your floor somewhat. You should use a spray adhesive to attach it to avoid wrinkles. It should come with a padding. When you spray glue this down it should release from the Dynamat leaving pad fuzzys behind if you have to pull it up. Automotive carpet is unitary backed and is flexible enough to follow the contours of a floorboard. On the other hand regular carpet has a secondary backing (Actionbac) that is much stiffer and would be impossible to install in one piece. However you could section off the floor, One piece drivers side, one pass,trans tunnel etc. You would still have to glue it and bind the edges to avoid raveling. This would look more custom. The upside is the regular carpet itself is cheaper, you wouldn't have to order alot as it comes 12 feet wide. 6' or 8' x 12' should be plenty. You could even do the cab wall behind the seat. I've done a couple of cars like this and they looked pretty cool, the sound proofing is a plus too. By the way I'm a Union flooring installer for 20 years so sorry for the long explanation.