2004 was a dual QB system out of necessity (after the first game) because of injuries. I don't recall Ainge and Schaeffer splitting time when both were healthy except for the UNLV game.
What question, SJT?
The only person I see not answering a question is this: you said that you remember "less than 20" cases of a 2-QB system being used in college football. So...what are those "less than 20" cases, and how'd they do? If you truly do remember them, you shouldn't need any research. Just blurt them out.
Now, I'm happy to answer any question you like, if I know the answer. What's your question?