I have a 370 litre L shape powder coated black tank. With a pump and hose and everything. It is installed in my cummins right now, looks awesome. They make these L tanks so you can add a truck tool box on top. Tidy tanks actually makes the custom matching one, but I never needed a tool box.
Text me for pics
Please no more time wasters. It's a L shape tidy tank. Look online at them. If you want it make me am offer or come grab it.