This came from Goudie via the Chicago Crime Comission in 2007 directly following FS, for what it's worth:

Seventy-eight-year old No Nose John Difronzo is the boss; Difronzo's major domo is his brother Peter, whom mobwatchers say acts as an errand boy, delivering orders to outfit associates.

The current underboss: Joseph "The Builder" Andriacchi, a convicted burglar. Andriacchi is said to control the daily operation of four criminal crews:

his own Elmwood Park crew;
the lucrative 26th Street/Chinatown crew assigned to Frank "Toots" Caruso who has deep political and labor union ties;
south suburbs, overseen by outfit octogenarian al "The Pizza Man" Tornabene.
finally, Cicero, managed by John "Pudge" Matassa.