I have a diesel bowser that will be used for on-site fuel dispensing and I need both a clear General Arrangement drawing and a fully functional 3D model of the unit. The GA should lay out the tank, pump, hose reels, dispensing cabinet, ladder and all safety fittings so I can review space, access and service points at a glance. For the 3D work I’m looking for a model detailed down to moving parts—piping runs, mounting brackets, nozzle holders, even the sight-glass—so I can perform basic interference checks and eventually hand the file to my fabricator. Please prepare the final model in STL format; native files from SolidWorks, Inventor or a similar parametric package are welcome as supplementary references if you already use them. Deliverables • General Arrangement drawing (PDF and DWG) • Fully detailed 3D model (STL) ready for print or further engineering use