Generator and alternator pulleys are interchangeable, just get a half inch generator pulley---GM, Ford, or Chrysler and use it. Sometimes the pulley needs a spacer and sometimes the alternator shaft doesn't stick through far enough for a lock washer so just clean good and use a dab of red Loctite. Use the alternator fan and don't use Loctite until final assembly. The nut can be heated to remove at a later date.
