That is a sweet ride. I'm sorry to say recent times is illustrating to people that some kinds of states seem to go out of their way to injure people. Get out soon as you can.
Take in a copy of the pertaining page off Myron's Mopeds describing the model. Even better would be a signed letter from a local bike / Scooter / or Moped mechanic stating these were manufactured as 48 or 49cc. That is a professional. Then when the guy does that, don't be a JERK. Make sure you spend $50 with him for new tires or whatever so he's knows your thankful and a customer and not some JERK that sucks up his time then orders everything online supporting some other guy's family.
(Not that online is Jerky, but it is jerky to take up a pro's time only so you can go out of your way not to help him feed his family. When the Moped Shoppe was in West Milton, I asked him for a couple pointers and went out of my way to spend money with him for the favor. Sorry he's no longer in business. It was so cool to run down the road and get jets or whatever in my hands NOW.