Joe Pesci is 73? Wow. And yeah, Frankie Valli would do great, but isn't he on the older side as well nowadays? And I agree also that Michael Imperioli can do Leonetti just fine.
Start the movie in prison with the Pesci or Valli playing the current day Scarfo looking back on his soon to be ending life. Then go back with a younger actor playing the younger Scarfo.
