I'm probably one of the very few, that ever raced a go-kart at Bloomington, been a long time ago, maybe late 70's, only time I know of there were ever a genuine kart race held there, maybe only 2 classes that I recall, the unlimited 2 strokes, and the one and only, US820's, course I had my unlimited Komet 135cc, direct drive, what a blast! Bob