from what i remember the two guys that set them up were from the philly family,when they decided to cooperate the deal they made was that they werent going to give up anyone from their family but they would help bring down the sicilian dealers you mentioned by introducing the cop(forget his name) to the sicilians as a dealer looking for a supplier.

"Let me tell you something. There's no nobility in poverty. I've been a poor man, and I've been a rich man. And I choose rich every fucking time."

-Jordan Belfort