Hi I purchased a truck bed just like yours at the end of last season. I think it's the perfect setup for residential mowing. I am in the process of building wooden sides to attach to the fold down alluminum sides so that I can haul mulch and connect my wood chipper to the back of the truck. Do you have any pictures of how your wood sides are attached? I really like what you have done with the truck. Thanks and Great Stripes.