I was just notified that VXB is now carring v bearings to use on the Joe's 4x4 and many other designs here on the Zone...Check it out here is the notification
V Groove bearings and U Groove bearings were introduced this month, and can be used as track bearings or linear guideways. Imagine the unlimited applications at http://www.vxb.com/page/bearings/CTGY/V-Groove-Bearings and http://www.vxb.com/page/bearings/CTGY/U-Groove-Bearings.