72 Duster Hood Question

I have a '70 hood on '74 hinges with no issues. From what I can remember on the '70 hood it has a piece of metal that slides inside the hood that the bolts thread into. The holes in the hinges are fixed (diameter of the bolt) and the pieces of metal inside the hood allow for the adjustment. On the '74 hood the hole that the bolt threads into is fixed and the hinges have slots to allow for the adjustment. It's been a while since I've put the hood on so I don't remember exactly how it worked but I know I didn't change hinges.