Darts BB Radiators

Hi everyone. Anybody know what size tubes and on what centers 22" big block Dart radiators originally had from the factory? Also how many cores did they have, 2 or 3. I'm looking at a aftermarket rad from a vendor called Windy-City Muscle and trying to decide if the radiator they offer will fit between the fan and the radiator support on a 69 440 Dart. They clam its a exact bolt-in fit (same as the original rad) and looks about the same as the original too, but it has 4 cores with 1/2" tubes on 9/16" centers. Core dimensions are 17&1/2" x 22" Has provisions for the factory fan shroud it looks like also. Not looking for a aftermarket alum rad so please don't go there. This one is brass/copper and looks more stock. Any help/opinions would be greatly appreciated. Thanks.

Talk with Bob at Glen-Ray Radiator and he will tell you. I know for sure that the original radiators have 1/2" tubes.