F-350 Steel Utility Tray Design

I have a set of STL scans for the rear of an F-350 already on hand and need them converted into a complete steel tray design that can go straight to the fabricator here in Western Australia. The tray has... (Budget: $3000 - $5000 AUD, Jobs: 3D CAD, 3D Design, 3D Drafting, 3D Modelling, 3D Print Design, 3D Printing, 3D Rendering, AutoCAD, Fusion 360, Solidworks)