Today I installed the OEM front splash guards. It was really easy. I just took off the front 2 screws on the liner and there is another screw under the sidestep. I also took the advice of someone on here to get some Kraco floormats from Sam's club. The fronts fit 95% perfectly! I was amazed and it was only 19.99 for 4 pieces! I was going to get the rubberish OEM floormats from the dealer for $80-90! hah! The back ones don't fit that well but who cares like anyone will get to sit in my armada! hehe just kidding. Here are the pics.
http://home.houston.rr.com/tiengoc/images/floormat1.jpg
http://home.houston.rr.com/tiengoc/images/floormat2.jpg
http://home.houston.rr.com/tiengoc/images/splash1.jpg
http://home.houston.rr.com/tiengoc/images/splash2.jpg

From Costco right? Two single mats for the front, One long one for the rear. What is the third piece, a 2nd long one?