1/4-mile with pro tree. Previously known as 'Factory Stock'.
Race distance: 1/4-mile
Tree: pro
Heads-up, 1/8-mile with pro tree. No break outs. No times.
Race distance: 1/8-mile
Heads-up: yes
Tree: standard
Street legal cars made in 1979 or earlier. 1/4-mile with standard tree.
Heads-up, 1/8-mile with pro tree. Any full size truck that meets weight minimum. No S-10s, S-15s, Rangers, or Dakotas. Trail Blazers allowed.
Race distance: unknown