Thanks, but which on do yo mean> The one in post 9 is from Niagara cycle.
I have tried to contact them, but they were not answering, though parts came after a week.
The link I was talking about is this one http://www.ebay.com/itm/Sapient-Rear-Wheel-12-BMX-Bike-Tire-12mm-Axle-/141193292191?pt=US_Tires&hash=item20dfc6a99f it the ebay auction from your article at the top of the thread.
The one in 9 looks like a freewheel hub to me an that wouldn’t work. You need one that has the description of a cassette hub. The only issue may be size, but from what I read most are the same size.