Does anyone have any experience with these liners? I am thinking about getting one. Also, how does it fit with the double cargo deck in the 2003 Limited? Looks like I might have to remove the deck.
I have one in my '03 and it's fantastic. Installation is snap - the canvasback has velcro along the edges on the backside that attaches quickly and securely to the stock carpet. I comes in three pieces - one for the cargo area floor and two pieces that go over each section of rear seat. It's been a fantastic investment with all of the mud and grease I've gotten in the truck from my bicycles.
I did have to remove the double decker in my truck, but I needed the extra couple inches of vertical clearance in the back for my bikes. When removing the double decker, you'll need to buy a new $150 trim piece. See this thread for more info: http://www.toyota-4runner.org/showthread.php?s=&threadid=2871
When I ordered the Canvasback, it sounded to me that they didn't make a second model specific for trucks with the double decker. That may have changed since I bought mine.