Aluminum is NOT LIKE COPPER where more tubes/rows means more cooling. It is the size of the tubes/rows that provide the best cooling. The highest cooling efficiency is with 2 rows 1 inch to 1&1/8 inch wide. Do your research and you will find any major name brand radiator shop will be building them with 2-large rows. Usually at a premium price. This radiator is every bit the quality of any high dollar radiator with a lifetime warranty against any manufacturer defect. Remember Just because they can bend and weld aluminum into the shape of a radiator does not mean they know how to make it cool properly.