I have a tank cover that was on my old GS500E. It was a '96 I think. I think they changed the tank in 2001? So it should fit all years before that.
Its in good shape, no rips or nicks or anything like that. $20 shipped.
(http://img683.imageshack.us/img683/7190/tankbra.jpg)
PM sent.
Didn't last long. Sold.