I have a '88 NX 650 that I would like to extend it's fuel range with. I hear that Acerbis has a 6 to 7 gal. replacement tank for the NX but so far, I have been unable to find it on their webpage. I will continue to look for that one...but does anyone know of other tank options for this project? Anyone else have one of these beasts that have been 'farkled' up? Looks like a great forum with lots of info on the single cylinder bikes. Thanks in advance for the info.