340 Dart Fan Blade

Does anyone know the correct part number for a 1973 340 Dart Sport
fan blade? I'm trying to locate the correct one for my car. The factory shop manual shows it to be 18 1/2" dia.-7 blade - 2 1/2" width but no
part number. It also states whether it's manual, automatic, A/C, or max cooling they should be the same as my car is factory A/C with automatic.
Thanks