Bristol Update...
Jeff Gluck @jeff_gluck
NASCAR will have four 15-lap heat races the day before Bristol dirt race to set the lineup for the main event. Cup will also have two one-hour practices on that Friday...
Bob Pockrass @bobpockrass
NASCAR to announce more details about Bristol format next week. It announced both trucks/Cup get 2 hrs practice Fri March 26, four 15-lap heat races, starting at 4:30p ET for trucks, 6p ET for Cup on Sat March 27. Truck race follows that night, and Cup race Sun afternoon March 28