Group 4. Classic 3, 4, 5 & 6. Lap time over 1.40 at CTMP.
Group 4 ran alone for practice & qualifying on Friday and Saturday's 2 races. Group 4 was combined with Group 5 for Sunday morning's race and Sunday afternoon's feature race.
Group 5. V/H over 2500lbs., Classic A, 1 & 2.
Lap time under 1.40 at CTMP
Group 5 ran alone for practice and qualifying on Friday and the two races on Saturday. Group 4 & Group 5 ran together for Sunday morning's race and Sunday afternoon's feature race.