Does anyone know where.. I could find a set of 1/16 Leopard wheels?

Either Tamiya or Heng Long... I think they might be just the thing for the Comet conversion that I'm doing.

I've noodled around the web, but couldn't find any. But if anyone has upgraded to metal wheels and has a spare set of plastic wheels around, let me know - more than happy to pay a fair price for them!

Thanks
Brian