If you are still looking there is one on ebay:http://www.ebay.com/itm/2004-Honda-NSR50-Fuel-Gas-Tank-/121790370753?&_trksid=p2056016.l4276 These tanks are hard to get in the US, and just pop up every now and then. If you check Yahoo Auction japan there are more available there. I purchased one that way. With exchange rate and shipping it turn out to be a decent deal.
I have a NSR 50 tank sitting in the garage. I am in Atlanta. It is in decent shape! Also have a few extra sets of tires, brand new set of Salva Rains. 404-512-9228
