This OE Fit Aftermarket Radiator is using the latest aluminum core designs and manufacturing techniques for optimum cooling. They are built by the finest metal fabricators & welders in the industry. GM applications that use the factory cradle mounts come with C&R's exclusive Custom Soft Mounting System which holds the radiator in place yet allows for thermal expansion. It comes with the custom upper bracket and mounting hardware. No holes to drill - as it bolts to the stock core support.