When I look at this photo:
I see (3) sets of holes. From the bottom up, there's a set of 3, a set of 3, and a set of 2. The two sets of 3 look reversed and were probably the end brackets for the sound-off series-28 style light. The other 2 offset to the right of the mirror probably held the Five-O light. If you really look at the photo of the gray car, it looks like the Five-O light was offset a little to the right. Remeber, you're looking at it at an angle from the right.