Radiator height above upper support?

Need a little help if you don't mind. I don't currently have a hood for my car and I am trying to figure out a good mounting position for my new radiator. Its a non stock aluminum so placement isn't as easy as lining it up. I am just trying to figure out how much space I have in between the upper radiator support and the hood. This would be on a 72 Scamp/Duster, changing the front end over from 73 to a 72 model as well. Thanks in advance.