The outside is in ok condition with 0 rust on it. It just has bad paint.If your tank has not rusted through the link blow is for an outstanding product.
POR-15 Paint And Coatings From ARP POR-15 Motorcycle Fuel Tank Repair Kit
Depends on whether another tank is readily available that is better than what you have, how much you wanna spend (if someone else is repairing), how handy you are (if doing the work yourself), etc. I did the same project on an old magna for my son. If the main tank is cruddy, the reserve is probably the same and needs to be removed to clean and/or reseal.
I am in New Jersey. I found a few shops but I would have to ship my tank to them.Gas Tank RENU - USA
Is removing the reserve hard? I had this bike torn down a few times but I've never had to cut into it.
Had them treat an old car tank that couldn't be replaced easily. End result was very good. If they're in your area and you can't get a replacement tank, I'd recommend them.
Speaking of, where are you?