Radiator calender date

[70dusterA62]

38088 ? Date code.
1970 2998978 radiator the car built on Jan7th 1970 is too early or late or use 69 radiator?

 

[Dana67Dart]

That might be a vender code but if it is a date in the 10,000 day calendar, it is Saturday, November 7, 2065