i'm trying to help a buddy out. He's got a 1996 Polaris 600 xLT. the water pump is toast. Ive got it apart and the bearing is junk. Has anyone ever rebuilt one of these? its a strange bearing, and i can't find a kit or specs on it, or even a part number. Is it rebuildable? I'm not a sled guy at all. Just trying to do a solid for a pal.