Good job on finding your original grill. Looks straight and the lenses look intact, should clean up nicely. I think they were just running lights.
On your brake wheel cylinders, IIRC, the 55 rear cylinders were slightly larger inner diameter than the 40, at least on my '74. May not be true in '69, but something to check.
On your brake wheel cylinders, IIRC, the 55 rear cylinders were slightly larger inner diameter than the 40, at least on my '74. May not be true in '69, but something to check.