Is the body fiberglass?
Mine is fiberglass and I had to remove the vinyl wrapper, but there are two areas where they did some minor bodywork. I used a half inch, very sharp chisel and scraped the paint off.
Where the vinyl wrap refused to come off the painted stripe (over the fiberglass), I used the same technique but was much more careful.
I don't think there's any practical way to pull a top layer of paint off another layer. Sanding it, in my opinion, would never work to anyone's satisfaction.