That is a topper made by ARE. Their website is
www.4ARE.comand it is the Z-Series. Color matched with everything it was $1800 back in 2004. Keep in mind that is them installing it and I did get the remote locking option. That is pretty cool because what it does is it makes it so when I lock the truck with my key fob it also locks the topper. They hook it up into the truck locking system. Really nice to have for me. I only have it off right now because I was hauling some dirt and I actually get better mileage with it off than I do with it on. I think the weight bring down the mileage more than the less draghelps. Also this is the first truck where I got the spary in bed liner. Really like that as well. When I had the end loader dump in 3 loads of dirt for landscaping our house this summer it made it so nice to shovel out. No scraching up the paint. Just washed it out and it looks just like new.