The earlier lakewoods like I have had serviced only one flywheel , 143 tooth,Gee could it be out of cert? later in the 70's they came out with the 2 position 130-143 tooth bell, Should bolt right up with no problem. As cab said the bearing retainer hole is critical , make sure it fits or get a bushing or a larger retainer. Brewer Performance or Passion have them.