DeWitt Radiator's DIRECT FIT™ Corvette aluminum radiators are designed to install into the stock mounting and use the factory connections without any modifications or adapters. The term DIRECT FIT™ gets thrown around a lot today. Many companies offer replacement radiators and most of them require some alterations, even when they claim they fit. Each DIRECT FIT™ radiator starts with a USA made core, furnace brazed in our own furnace. Our cores feature two rows of cooling tubes, serpentine fin and they are epoxy free. Press formed end tanks are manually tig welded by expert craftsmen, providing the ultimate in strength and appearance. Many companies build Corvette radiators, only one specializes in it.