After the 1974 season, the management/staff added a race for the Thanksgiving weekend, entitled "Turkey Derby", a 150-lap open competition race for Modified stock cars which attracted many of the top drivers in the division. After a successful debut, the race grew in stature and popularity and, in 1981, attracted a record field of 75 cars including NASCAR National Champion Richie Evans. From 1974 to 1992, the Modified race was contested as a 150-lap event. When the years went by, the format had been changed to three 50 lap events, if the driver finishes in a certain spot, he will be declared the overall winner. The Tour Type modifieds (to refer to big block engines, similar to that of the Valenti Modified Racing Series and the NASCAR Whelen Modified Tour cars), returned in 2002 it was 150 laps. In 2004, it was 125 laps. From 2004 to 2009, it was 100; since 2010, it has been 150 laps.