I spent my post work hours tonight stripping and prepping the tank for paint. It had both it's original paint job and a rattle can flat black job on top of that. Nothing some Aircraft Stripper couldn't take care of.
After the stripper took effect, I used a combination of wire brush and putty knife to get most of the mass off. I then went over it with some 180 grit sand paper and shot it with etch primer.
It looks like it's about time to commit to a color.