Wanted - Looking for 77-78 XS400 '77 XS350, '77 XS350, and/or '77 XS500 Tank

[Moisstink]

I am looking for one of the above tanks to mod out to fit a 1975 xs650. Really any Yamaha tank that has the box style. The tank does not need to be pristine. I am looking for minor dents and nothing crazy on the rust factor. I have found them on ebay all day long in great condition for 150.00 and up. Since I am not sure about the mounting I am trying to keep the price down in case of too many problems that may make it a no go(petcock placement and general mounting).