Frank Dimatteo strikes me as a man exaggerating and lying about his knowledge. Everything he says about Persico, form the Garfield Boys gang to his early arrests have been in older books or discussed multiple times on the internet. He grew up near the Gallos, but was not in their crew or close enough to know as much as he claims. I doubt he even knew Persico. Maybe he said hello to him once as a teen, that is not enough to fill a book. He'll still do it and make money.