They got him without help from New York. They found Raymond Ferrito, a bookmaker and arsonist from Erie, PA through Jimmy Frattiano, a Cleveland, OH native. Convicted were James Licavoli, John Calandra, Ronnie Carabbia, Butchie Cisternino, Anthony "Lib" Liberatore (Made member and powerful Teamster official) as well as Kenny Ciarcia. Here are a few articles regarding Greene's bombing death.

http://www.nytimes.com/1985/11/26/us/james-t-licavoli-crime-leader-in-cleveland.html

http://www.cleveland.com/moviebuff/index.ssf/2011/03/danny_greene_legendary_clevela.html

http://www.cleveland.com/moviebuff/index.ssf/2011/03/welcome_to_cleveland_1976_ad_b.html

http://clevelandmagazine.com/ME2/dirmod.asp?sid=E73ABD6180B44874871A91F6BA5C249C&nm=Article+Archives&type=Publishing&mod=Publications%3A%3AArticle&mid=1578600D80804596A222593669321019&tier=4&id=ED628D054E1846DBBBC177E7E526B391