this is from the imdb site....
Trivia: André Sogliuzzo was handpicked from a vast selection of voice artists by Al Pacino himself, to deliver the voice of Tony Montana (who of course was played by Pacino in the film the game is based on. The game developers had decided Pacino's current voice to be "too old" for this 20-something character, so they gave him full control over his substitute instead, as a part of the "voice and likeness" agreement. This very same agreement also prevents Pacino from lending his voice or likeness to other film-based games, which for instance is why he's not included in the cast of any of EA's current nor scheduled Godfather games