Pictures would help. But 2 holes IVO of the hood latch bracket might be for a radiator holddown bracket. I have seen some rad support with those holes and some without. I have not researched why some would include the holddown bracket. My 62 w/283 came without. A 66 w/250 came with.
I dont have a good sense of where the other 2 fall out.
In 1963 they changed the way the radiator mounted. They removed the side mounts and went to a couple of U-shaped brackets on the bottom with rubber bushings and a single mount on top.
