Well i used 2x4 rectangle tube for the frame, used diamond steel decking for the deck and back end and used 1x3 rectangle tube for the headake rack. All welded together with 7018 rods. Pretty stout bed and not a whole lot heavier than the stock bed it replaced. I've made a few flatbeds for various trucks over the years. I prefer them in an off road rig due to not being able to hurt them. And they don't hang up as easy on stuff. It costs about 350 dollars in steel about 20 dollars into chopsaw blades and 40 dollars or so into rods. Then about 50 dollars into tai lights out back