I found a tank with bad paint, but no dents, and with some small, patched holes along the bottom edge of one side of the tank. All in all I'm pretty pleased with it, especially considering I got it for a total of $38 to my door.
I'm not too worried about the epoxy patches. The tank seems solid, and I'm pretty good with a MIG welder, so I'll grind the epoxy off and weld up the holes. Since they're pretty much out of sight, I won't have to worry too much about making the patches look perfect, but I will give it a shot.
The tank I dented was very clean inside, and the replacement is rusted inside. I've never tried coating a tank with the sealer, and was wondering if there's any specific kit that's better than others, and how to go about the reseal.
This will be a new procedure for me and I'd like to do it right.