My 1965 Belvedere I came to me with a Griffin Cross Flow Aluminum Radiator from Summit Racing. It cooled the .030 over 440, 12.5 to 1 Wedge engine to 180 degrees during the Summer months here in SW Ohio. Last Summer, I replaced the Wedge with a NEW 472 Hemi and the same Griffin Aluminum Radiator from Summit is still cooling the Hemi to 180 degrees. I have not driven it in the Summer yet, but I assume that it will be fine. I believe that Summit still carries the same or similar Griffin cross flow radiators and their pricing is reasonable.

Good Luck...