Thanks. It did come from out of the country - Pilgrim tub from Costa Rica, I think. I have my jump seat holes identified, so these are for something else.
I'm trying to figure out what the holes are for in these pics. They are in the rear corners of both sides of the tub.
I think the larger holes might be for wiring to marker lights and license plate older, but not sure about the rest.
This is a new 3/4 tub for a '78.
Thanks!