Walken?
Had he already shot some scenes before Duvall took over the role?
shareNo, prduction delayed because filmmakers want to shoot the movie in New York instead Toronto. So it was more expensive and it modified the schedules, therefore, Walken couldn´t be part of the cast and Duvall was called at last minute.
Prostitute: What the *beep* are you doing?
Johnny: I'm gonna kill a bunch of people.