The Sprint Invaders will be the main feature for Friday, August 16 at the Lee County Speedway in Donnellson, Iowa.  Classes include:  modifieds, sport mods, sport compacts and vintage.  Sponsored by Big Country 103.1    Gates open at 5:30 p.m.  Hot laps at 7:00 p.m. and racing begins at 7:30 p.m