'72 Dart Demon production numbers for Devil kit

Mr. Norm's Dodge dealership at the corner of Grand and Spaulding in Chicago produced some after market add ons for the 1972 Demon. The hood mounted tach was one of them. If another dealer added that to your Demon, it was ordered from Mr. Norm's Grand Spaulding Dodge. I think the Go Wing was a dealer installed option, and not part of the Sizzler package.
It will be tough to find any production numbers for dealer installed add ons. Do a search for the 1971 Dodge Demon Sizzler Package. It was offered in both years. In '72 it was an a59 code option. Hope this helps.