In 2011 the Outback bowl hosted a pair of 7-5 teams in Penn State and UF. A 7-5 Gamecock team played there in 2009. A 7-4 Iowa team was there in 2006. A 7-5 Vols team playing on New Year's Day in Tampa in not out of the realm of possibility.
Well, not quite.
To start, the Big Ten teams would have had a different selection criteria than ours.
A 7-4 Iowa team from 2005 would be the same as an 8-4 team in the modern, 12-game era (the only thing that would have changed would have been they would have been allow to schedule a 12th game, which most likely would have been a cupcake game).
The PSU that was selected after the 2010 season, was more because of the conference's overall performance. There were 3 1-loss teams that each clinched the conference.
Two went to BCS bowls (Wisc, OSU). Capital One got the next selection, took the other (Mich St). Outback was allowed first selection after that, and all the remaining teams were 7-5 with the same conference record, so they took Penn St (which was the biggest brand of the 3).
As far as South Carolina after the 2008 season, again had to do with how the conference did:
UF and Bama both went to BCS bowls. The Capital One had the next pick and chose UGA.
The way the previous setup, worked at that time, was that the 3rd/4th pick was split between some combination of the Cotton, Chick-fil-A, and Outback bowls. The way it usually worked
That year, the Cotton Bowl selected Ole Miss (8 wins). When the Chick-fil-a and Outback picks came up, all that were left were 7-5 LSU, 7-5 South Carolina, and a 6 win Vandy.
Either the Chick-fil-a went first and took LSU, leaving the Outback with either South Carolina or Vandy, or the Outback bowl still had a contractual obligation to take the highest available East team (when records
were the same) and had to pick South Carolina.
But either way, those were all instances/seasons where most of the conference was bad and a 7-win team was the only think left/available to the pool. In other words, it took a lot of help.