I believe that the performance of the fans/and your cooling would be linked to the performance of your radiator also..from what I have read over the past while core size would also dictate cooling performance..4 row rads are not as effective as lesser rows??..and construction of the rad itself being copper or aluminum.....If your present rad works then I can't see why, at that cfm it wouldn't work..but I am a newbie at this stuff..just an info sponge..I have saved that product though for future reference and you can tell us all how they work,,,,just out of curiosity does anyone have the cfm rating of a 7 blade old style fan would be???