I'm trying to replace as many sounds as I can here and its seriously a long task.
Beyond the obvious that there are no TV series clips in here, one strange I noticed as I'm re-watching the episodes to get some good clips is that the pin has zombie grunting sounds but no sounds of people fighting/screaming and no gunshot sounds either, meanwhile half the airtime of the show is shots and screams.
@PinballZach did you ever find out what request number is for the ball?