K-Mac_600XC

I've just bought my first 4Runner and would like to put a roof rack on it. There is no rack on the truck, just the plastic strips down each side of the roof. When I search on the Thule site The rack that fits is the "400xt Aero Foot". I was wondering if anyone has these rack attachments on their truck. If you do, could you post some pics so I can see how they are attached?

Thanks