Grattan Raceway always produced some great racing as this photo shows. It’s Scott Zampach leading Dave Barnard and Jeff Harder in the Michigan Grand Prix. Zampach and Barnard were Grattan regulars, but Harder came up from the South Central Region to mix it up with the North Central Region riders with good success. The Michigan Grand Prix was a series held exclusively at Grattan and was a money-paying race. You could run any machine in the class. While you mainly saw production-based bikes racing, sometimes riders would show up with ex-GP machinery.