Found my dads original 1971 duster!

moparker said
I wonder if your radiator has been dicked with. Maybe side mounts are attached in the wrong place? Making the radiator stick out more than it should.

I think you’re exactly right. I just wrote that. I didn’t see this message until now. Here is a pic of how close the fins are to the water pump side. Also a pic of mechanical fan that they gave me to try. It doesn’t even fit in the fan shroud