Demon non-option question

There's tables here that tell you what was standard and optional at the time of printing. It doesn't appear that the lighter was standard on the Demon, but was on the Demon 340 and all Darts. It doesn't show the lighter packaged with other options, but White Hat Specials, Spring Specials and the like would bundle popular options for a limited amount of time.

The 1970 Hamtramck Registry - 1971 Dodge Dealership Data Book - Dart & Demon