Stop in for a cup of coffee
I love it when I can answer Mopar questions for my buddy Joe. He called a few influential guys in the hobby and didn't get an answer. I figured it out for him. Could a 70 Super Bee have the M31 (Body Belt Mld. option) I found the answer on the Hamtramck site. The answer is yes. The M31 option was available on all "Coronet" models, standard on convertibles but not available on 4 door or station wagons. 2 door models only. The E in the chart means "extra" or optional to order. Those moldings are at the top of the door skin and on the top of the quarter just below the door and quarter glass.