Only favored by 3.5 over Texas Tech in 2007.
The Nebraska games mentioned below, in 2007 Mizzou was favored by 6.5. In 2008, Mizzou was favored by 8.5 over an unranked Nebraska team.
If there are any other games you want to check, here's a site:
https://www.oddsshark.com/ncaaf/database
It doesn't have rankings for the teams but can give you the spreads quickly.