Why is that? It's a damn good movie with DeNiro and Pacino that has become a "classic" and a reference, and I have read here about the work that was made on the audio for The Good, the Bad and the Ugly and The Last of the Mohicans, so I know there are some guys here that can pull it off.
EDIT :
Dammit! It's not just the audio on the Diane Venora speech, it's the video, too. It would require a HDrip prior to Blu-ray or upscale the DVD...