Today a 2008 Ford F150 Super Crew Cab we're going to install part number TA21508-02-02. This is a tracrac SR sliding truck bed ladder rack with the over the cab extension. Now, first step to get our truck ready so we can install is to install our base rails. Base rail has a hole in it that lines up with the stake pockets that are in the truck. There are stake pockets here and there's one up… see more >