uh..yah...hi.. I don't know much about well..much but i'm pretty sure those drums are wrong, those are for dodge school bus. I have a long distance cousin who not only worked on the assembly line back in 70 but also moonlighted as a school bus driver who has verified this without a doubt. The red isn't paint at all, probably splashes from some poor kid that fell under the wheels. Most likely they re-packaged them and hid them in inventory to hide the evidence.....good try but no dice.
Mike
Michael L. Mancini American Muscle Car Restorations, Inc. 65 Foliage Drive N. Kingstown, RI