Yeah, that's what I was thinking must have happened, which I why I mentioned the moisture-free enclosure.......................
As for the undercarriage rust... my iPad wasn’t compatible with their site so I couldn’t see the pics. Cars not stored in a dry, climate controlled environment will get bottom-side corrosion. My 140 mile 94 Indy Pace Cobra vert had this problem. It took many long days over 7 months to solve that problem!
That IS the same one. Both state #190 of 2,000 Mystics produced. Both have the same photos. Same VIN.