I stripped the tank all the way down to bare metal to find absolutely no dents or bondo. But whom ever painted the tank before I bought the bike used an aggressive flap wheel to sand the factory paint off and left deep sanding marks all over the tank. So I gave it a coat of metal etching primer and a coat of filler primer that totally covered all but the deepest of scratches. It needs a lot more sanding and primer, but we have already gotten snow flurries up here, so my garage is too cold to apply more primer to get it close to perfect.
The inside is full of 30+ years of gas shmutz but no serious rust spots of any kind.
It does come with the fuel level sensor and petcock, but both need new gaskets to be leak free. I think I have a decent fuel cap for it as well, but am having trouble locating it.
I can sell it to you including shipping for $75 or a bit more if you need the fuel cap as well. Let me know what you think.