Over the next two years, the Gator Bowl will select one Big East team or Notre Dame, and one Big XII team. This is the best year for the Big XII in some time, so let's say that Notre Dame goes 8-4 with a bad loss to Southern Cal at the end of the season.
And since you genuinely seem interested in the Irish's bowl prospects - this is from an Irish blog
. . . On the other hand, let's say that Texas wins out to the Big XII title game, where they're upset by Missouri, and Oklahoma or Oklahoma State also win out. Now Mizzou is in the BCS and Texas would almost certainly follow, meaning the Gator Bowl could be choosing between 8-4 Notre Dame and a one-loss Oklahoma or Oklahoma State. According to the rules, the Gator Bowl gets the first selection of a Big XII team after the BCS takes its one or two (which it will be), represenatives. I know when it comes to going bowling the Irish almost always take precedence, but I find it difficult to imagine that the Gator Bowl would pass on a one-loss Sooners team for a four-loss Irish team.