Usually Fl - DMV (ha, their tax collector) uses the VW donor cars title so mine is a '71 VW. This makes it easier to resell pretty much around the world. An argument can be made that it doesn't resemble a 2 door VW sedan beetle. Some states prefer for hot rod or special construction vehicle re-VIN assignment (but often it results in them using the current year and not the donor or replica represented year - so emission can be an issue). You want to keep in mind resale down the road.
I would go to a Trophy shop and have an ID plate made that looks as close as possible to the CMC gold plate. They engrave stuff all the time. Drill 4 holes and rivet it to drivers door opening.
Curiosity would be killing me as to what a reputable auction like Mecum looked at. I'd have out my hair dryer removing the carpet glue to see what's there. You could doo something like this after cutting out the carpet -
