I've got myself an underslung water tank to give me the option of transporting a larger quantity of water for wild camping in Scandinavia. I have heard different things about them being Westy or Devon accessories, so I'm not sure on this. Mine looks identical to the one in the image below. If anyone has/had one fitted I would be interested in the routing of the filler neck (I think it goes to the area adjacent to the driver seatbelt mount). And any info on what all the outlets are for would be great (I presume at least one is a breather). There doesn't seem to be much info on these tanks online. Lastly, if anyone has a filler neck they don't need please could they get in touch as I currently have the tank only.