I got the carpet I decided to use for the floor of the van at good ole Home Depot. Mainly because we live in a small town and there really isn't any other choice. But It really seems like good stuff, and was $4.46 per linear foot, so $70.00 to do the floor of the van. It is coated with rubber on the back, but still pretty pliable. It comes 6' wide and I got 15' so I could cover the floor in one piece. They only had this style in black, so I'm not sure if it comes in other colors. It's pretty soft, too.
Besides having to pull the seats out to put it in, it was fairly easy and came out pretty good, I think. I still need to figure out what to do for the wheel wells. I left the factory rubber mat under it for maximum insulation and padding. Do you think there might be any issues with that or Ok, because I have 2 rubber barriers between the carpet and floor. I'm going to need all the protection I can get get with 2 kids and a dog back there.
It molded itself pretty well to fender wells in the front of the front seats, and was pretty easy to cut and fit behind the trim pieces.
And the"spacer" for the seat brackets blends in pretty in nicely, and since I used the rivnuts in the floor, I can remove it if necessary. I can also just take out the seat and the "spacer" doesn't really get in the way. The carpet definitely helped knock out a bunch of road noise, but I am not sure of it's insulative quality. I'm pretty sure I am going to use it to finish out the rest of the interior walls, and for my other van "Lucinda".