I guess I miss spoke about the sales figures new. The circumstances of the buying public back then were complicated. Look at the Thunderbirds. 55-57 were not very good sales for Ford. The sales took off with the 58 up. Now look at what years sell and which ones goes to the scrapper.
Looking on the Charger board want adds, there are 56 adds wanting 69-70 Chargers and 1 wanting a 71. Not one add is for 72-74. Sales figures don’t mean much 40 years later.