Diy Wood Truck Topper . Why not use 1 bluefoam board, and not wood ? Measure the width of your truck and then. Diy Truck Topper Plans Joy Studio Design Gallery Best Design from www.joystudiodesign.com Wood framed, 1/4 plywood bent over top, covered with fiberglass cloth. Screw the whole frame together and put it on the van to clamp it down. You can find a link to all the parts i used at the following website.