Duggan's Auto Service Center of Moorhead, MN takes quality and customer service seriously. As a NAPA AutoCare Center, we follow a strict Code of Ethics so customers will know up front what to expect when they require auto repair services from us. Duggan's Auto Service Center of Moorhead, MN takes quality and customer service seriously. As a NAPA AutoCare Center, we follow a strict Code of Ethics so customers will know up front what to expect when they require auto repair services from us.