They mention Castellano too when Johnny and Tony are walking through the hardware store and discussing what it take for Tony to do the hit on Carmine and Johnny says something to the effect of
" This is much different than the hit on Castellano" and " the other four families might raise a stink but I have their ear through Ginny's brother" I think his brother in law was connected in some way to another family?
http://www.youtube.com/watch?v=VfrEE49T7VU