Thanks Slappy, very generous of you!
I called the source and he says they don't keep them in stock but can order them (2 days). If you want to check on availability just put that in the comments section of the order form and they will contact you with availability only. I only found the L/S tank on their online parts catalog but he said write that you want the R/S tank in the comments section and he will add that to the order/info request.
I noticed that there are alot of other parts that go with the tanks (caps etc) and probably need some more stuff needed that is in Swiss on Slappy's installation link... are the pics enough Slappy? Or could someone translate?