Sciacca was overheard on wiretap in the 1960s saying that the Bonannos had 180 members. He was in a position to know the exact numbers. Also, it seems that many forget to include the Montreal crew. Bonanno was apparantly criticed for making new members when the books were closed. I don't see how Bonanno would allow his family, which was one of the three original families in New York, to be smaller than the Colombos or Luchesses. Especially because Bonanno was seeking to become the most powerful boss and was accused of 'planting his flags all over the world'.