69-70 Grill difference ???

[Eichorst69]

I have seen both these style factory original grills on many of the 69-70 trucks. The difference is where the center bar meets the head lights.

The 1st one has the black painted & molded lines all the way to the head lights and the 2nd one stops just after the turn signal lights.

Any one know the reason for this?

I thought at first that the 2nd one was aftermarket but I see them being sold as original GM parts, NOS.
I have also seen them on many trucks where I doubt they're aftermarket???

Rob