Thank you, I think you solved the mystery. Mine has a RH side like the '63 and a LH side like the '65 (the smaller hole below the large hole) Where did you find the lower photo? Is that for sale?
Just do a google search for "1963 Valiant radiator support." It's the second image. I clicked on the page in the link for the pic and that item is no longer on the page, so I'm guessing it's no longer available.
