So, I pulled the tank from my 73 Vega today. As I suspected, it is full of rust but i do not see any rot holes. So, since they do not make new ones and mine I don't feel is bad enough to toss, what options are there for dipping mine or reworking it? I am putting my car back original so I really do not want to use an aftermarket fuel cell if i can help it. Is there some kind of mild acid that I could use to clean this up?