This radiator is a “custom package” for all 1973-87 C10 Trucks/Blazer with LS engines with manual transmission. Inlet and outlet are on the passenger side. This radiator features factory type press formed end tanks, 20.5" dual row core, and serpentine fins. This radiator will provide 30% more cooling than the stock copper unit and half the weight. Features dual 11” SPAL fans with 2720 CFM. It is epoxy free and will fit into the stock core support. Radiator comes with 2 rows of 1” tubes, dual fans, billet DeWitts™ cap, temp sensor in the radiator, steam line, relays, and wiring.