you are going to have to get it apart and look at it. see if it will fit as is. if you can do it, then get to it. might be worth the price of tool investment because you can always use them down the road. or, see if there is anyone on this site that you can bring it to, pay them, and you're golden. or take it to a scooter shop and i'm sure they can do it.
for the motor, the TC will get more speed so put a free flow filter and header, purchased from OldMiniBikes, and it should wake up.
or you could stuff a GX390 in there. mines alive.