Augustana wrestling coach Kraig Presler today announced the addition of two South Dakota wrestlers to the Vikings' roster.   Jacke Benne of Rapid City and Justin Nieber of Sioux Falls bring the size of Augustana's 2001 wrestling class to six.     Jack Benne, Rapid City Stevens   Wrestling at 149 pounds, Benne won a state championship and posted a fourth place and two fifth place finishes in state meet competition during his prep career with the Raiders.     Justin Nieber, Sioux Falls Lincoln   Nieber is transferring to Augustana after one year at Huron University where he won 26 matches at 149 pounds. While wrestling for Lincoln, he posted state tournament finishes of fifth, fourth and third place.     Augustana's 2001 Wrestling Class   Jack Benne, 149 pounds, Rapid City, SD  Ben Caven-Johnson, 152 pounds, Jackson, SD  Aaron Graumann, 112 pounds, Sioux Falls, SD  Thomas Meester, 171 pounds, Rock Rapids IA  Justin Nieber, 149 pounds, Sioux Falls, SD  Dustin Wilking, 160 pounds, Jackson, MN