Holley/MSD is pleased to announce the expansion of Frostbite's Fan/Shroud line, which stands up to the challenging cooling demands of today's high-horsepower street cars and trucks. Now available for popular GM LS swap applications in two versions – Economy and High Performance – these low-profile/high-CFM performance fans improve radiator efficiency and eliminate the parasitic power losses common to ordinary factory-style mechanical fans. Both Economy and High Performance versions are available for Frostbite's LS Swap 3-row aluminum radiators (part numbers FB308 and FB309).