For the Kose style mount you will have to give acratech a call. I think there site is acratech.net but you must call and see if they still make it. You can however check some mail order sites overseas and order as well.
As for bearings, give RCBoyz a look. Just identify the bearing sizes you need and order.
If you have any more questions send me an email. I got a nice faq on the SB Sport.
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