Paper explination?

Since seatbelts were required in BOTH the US and Canada by 1974, they were NOT optional on your Dart. Therefore they would be installed on all cars built for US or Canada, and therefore it would not be neccessary to have a code on the broadcast sheet indicatng they needed to be installed. The only time there would be one is if the seatbelt had a special option where a special type might have been ordered allowing the assembly line to ensure the special one was used. Or possibly if they were "deleted: from the build for some reason.

None of my broadcast sheets have a code here, and all have seatbelts.

Grant