Under Tray tool boxes - where to move fuel filler ?

Probably not much help, but I had a cut-out in the right hand tool box to enable the filler to exit around the original point, but still had to extend the filler hose. Not much room behind the cab I'm afraid.

I did the same mod, allowing a cut out "step" in the right hand tool box to allow the filler to remain in the stock position and extended the tube with the use of some exhaust tubing bent up to suit. I have stretched the wheel base by 330mm, this now allows for a couple of decent sized toolbox and a 85 litres water tank on the passenger side, between cab and wheel, 90 litre water tank mid-mount above the axle, plus the existing factory fuel tanks. 90 litre fuel tank mid-mount forward of water tank and on passenger side of tail-shaft.