[YENKO DEUCE REGISTRY]

Thanks for the extra background info. Granville is just east of Columbus, so assuming that it came from Columbus there would be two possible dealers. Hugh White Chev, Columbus, and Konners Chev, Columbus. It is possible that it came from Glockner Chev, Portsmouth, OH. Other possibles would be Marve Minneman, Youngstown; Cenral Chev, Cleveland; Joseph Chev, Cincinnati; Luby Chev, Cleveland; Central Motor Co, Hamilton; White Allen Chev, Dayton; and White Chev, Lima.

I have heard a similar story from some car guys in the Columbus area about a dark green '69 Yenko Nova in some junk yard. Maybe this is one and the same car.
Marlin