This is mine. Similar to the one you said about, injust decided to go bit more industrial. Its on the opposite side to what the 300tdi supposed to be but that's because its mated with the lt77 box, so engine is sat further back not allowing much room for the intake pipe.
That's why I made this. It needed to go out the heater vent to avoid the hoses kinking. So redirect the heater vent and made this, all the ally is welded completely on the top. Has the comp filter on the top so more room under bonnet and just relocated washer bottle to other side. May not be everyone's taste but I'm really happy with it and its completely water tight.
O ignore cable ties on heater, that's a temporary bodge until I get new heater cables lol