suzuki 1982

I recently inherited a GS650G either 1981 or 1982 and I need a new gas tank. I haven't found a lot of good options and was wondering if anyone has used a different year/model tank on this kind of bike. Thanks!

The Cycle starts, runs and after running for a while the main fuse blows. New battery. Once fuse blows have to wait a day then starts up fine and runs for a while until fuse blows again. Just before fuse goes the cycle seems to run faster. The wire to fuse heats up. But strange that will...