I'm thinking Rose Bowl: USC 42, Texas 31
it's possible.
I don't think either has the defense to completely shut the other down, especially USC, but USC is far superior on offense.
for UT to have a chance, they need their defense to play relatively well and they need another playmaker on offense to compliment Vince Young.
Oh, and Rose Bowl MVP = Matt Leinart. The Longhorns will play close to the line of scrimmage to shut down Reggie Bush's running game (or try to), and consequently will be eaten alive by Leinart's arm. I think Bush's numbers will good, but at more human levels. Vince Young will also play a good game, but it won't be enough to overcome the Conquering Trojans.