84 Honda ATC 200M - Alternative Parts?
 

My son and I have decided to pull my old Honda trike out of the basement and into the garage to get it rideable again. It's been sitting for a while so it needs a lot of work. We need to update the wheels and tires; I would like to go to at least a 10" or 12" rim but I can't find anything for the 4/150 bolt pattern. I haven't even been able to find adapters to fit the 4/150 pattern. Does anyone know of an alternative hub that will fit the 200M axle? Maybe something with a more popular 4/110 pattern?