This custom made kit is quite possibly the best new product for the 240Z in many years. Our own tests showed temperatures running approximately 25% cooler than stock! The fans fit into a custom built aluminum shroud that was designed to directly bolt on to our stock replacement (two row) 240Z Aluminum radiator with no modifications. The kit includes hardware, fan thermostat (for activating fans), relay, wiring, switch, and instructions. Drilling of holes into the shroud to install the fans is required (fasteners included). One year warranty. Radiator shown in images NOT included.