It was a six cylinder grocery getter when it was born: 1 for Chevrolet, 13 for Nova six cylinder, 27 for two door sedan, 1 for 1971 model year, W for Willow Run, MI assembly and the rest is the production sequence. The Willow Run plant operated until 1993 as an assembly plant and then became a GM parts distribution center for a time. No tag, can't brag.