I think that this part of "OPTIONAL" equipment is understood. My Aunts 4 door 1965 Dart /6, 3 on the tree came with Heater delete, Radio delete, front seat belts, vinyl flooring and Power steering. My aunts husband bought it off an Arizona dealers floor when they were on vacation and crashed their Corvair. No heater in Washington State is crazy. We installed one from the J.C. Whitney Catalog.