Those are good choices to see some doorslammer action. We raced at Norwalk a good bit when I lived in Ohio - nice track. Lot of dragsters, altereds, and funny cars here on the west coast where I live now, but the Midwest is where the door car action is best. The U.S. Nationals at Indy is a great door car race too if you ever get a chance to go to that. Here is one I took of the Andy Boltz/Baughman's 'Cuda at the 1989 U.S. Nationals.