The hubs are pressed into the bearings, so you commonly see them sold as one piece when shopping for used parts. Parts from any 90-96 non-turbo 300ZX or 95-98 S14 SE will work. The hub bearing is only held on by 4 bolts plus the axles, so it's very straight forward. If you want to keep the stock brakes, just redrill the stock rotor. The holes don't have to be perfect since the rotor is hub centric.