1984 TRX200 – couple questions

Bought a TRX200 earlier this year for my wife to learn on. Have it up and running now but have a few questions.

1) I thought I read somewhere that there were some rear hubs that could be swapped on to the ’84 from another atv/3 wheeler to get the more common 4×110 bolt pattern. anyone know?

2) trying to find a carb kit for this thing but all I can find is from the states and shipping is pricey. Royal Distributing list carb kits for the ’84 atc200, but not the TRX200. curious if it will work.

thanks.