Start with Salvatore Catalano, research him a bit. He was a VERY influential Zip during the pizza connection days. He ran Knickerbocker ave with an iron fist. Pietro Licata use to run the show on knickerbocker and was a respected captain but he had a no drugs policy and he got whacked for it (Oh the irony given the no drugs policy!). Sal Catalano moved in to fill the void and the heroin started pumping.