Plans/blueprints to make your own welding bed for a 1988-2023 GM 3500/4500 DRW long-bed. Welding bed w/ utility boxes designed to fit on 1988-2023 Chevy or GMC 3500/4500 dually long-bed trucks with 34" wide frames. Built with a 2" X 4" 11 gauge rectangular tubing frame, 2" X 2" 11 gauge square tubing sub-frame, 16 gauge plate boxes & fenders, and 10 gauge plate tail. Overall dimensions: 114" long X 90" wide. Purchase includes: 32 page .pdf layout detailing all components & assemblies, a copy of the bill of materials, the optional upgrade to include the .dxf files of all sheet metal components to be cut on a CNC plasma table or laser, and 24 hour phone support from our lead engineer.