License plate light assembly 66 dart

Thanks for all the volunteers for this part. Here is the bumper. The light mounts into a inset. The hole spacing is about 1 3/4 (closer to 1 13/16).
Let me know if any of you have the right part.
Then I will need to ask how the license plate is supposed to attach in order to clear the light. Currently I am using a modern frame, mouting direct through the 2 big holes through the license plate , which completely covers the light inset.
I believe the type I need is going to be a round type that will sit above the license plate.
I am seeing lots of people selling the rectangle type, but that is the wrong one for my car.
Here is my bumper