i need to find new bearings for manual hubs

I have a o02 wrangler very modified I bought it this way and I always have problems finding parts for all the after market parts so right now the bearings went out in the hubs come to find out it has a manual conversion kit on it I think it's a spyntec kit but not sure no names or part numbers on any of the parts or bearings do theis kits use A standard bearing ?I might just have to call spyntec on Monday .

any help would be great thanks