Aluminum radiators DO NOT cool better than stock style, the ONLY difference is the weight. Plenty of studies done on that very thing. A good water pump, fan shroud, and fan are all you need. BTW, most radiators use 3/8" tubes, factory big block A-Body radiators use 1/2" tubes. Many mistakes are made when having someone recore your original radiator. I will only let Glen-Ray Radiators touch mine...