Barring a major shift from what was seen in Thursday's two qualifying races, NASCAR doesn't plan any additional changes to the Sprint Cup cars before the Daytona 500, series director John Darby said Friday. "You never want to say no, we're not going to do any changes. If somebody is holding onto something and we get a group in practice on Saturday and it gets really nuts, we'll look at it," Darby said. "Typically, we won't drop ourselves into a box until we drop the green flag on Sunday. But no changes are planned." Since Saturday's Budweiser Shootout at Daytona, where cars reached speeds of 206 mph, NASCAR has gone to a smaller restrictor plate hole, reduced the opening in the front grill and mandated a lower radiator pressure to slow the cars. The latter two changes were made so engines would overheat faster, forcing drivers in a two-car tandem that created the high speeds to swap places more often and slow down the cars. Read more: http://sports.espn.go.com/rpm/nascar/cup/news/story?id=6134932
