Wizard cooling radiators

Does anybody have any experience with Wizard Cooling radiators? They advertise an aluminum radiator that will fit a 70 Dart 340 engine with a M/T, which includes an aluminum shroud which attaches to the radiator like OEM. Just wondered if anyone has had any experience with one of these as to quality and fit, as well as cooling. Fairly pricey at over 600.00 bucks but maybe worth looking into. Thanks, Ben.