Performance Online's all new Aluminum radiators are constructed of aircraft grade aluminum. Each radiator is 100% aluminum with 14-16 cooling fins per inch to allow even distribution of cooling. They feature 2mm thick tanks and fittings with cooling for the baddest engines out there. 

Specifications
Mount Size = Horizontal – 21 5/8”
Core Dimensions = 17“(H) X 28 1/4″(W)
Overall Dimensions = 18 5/8“(H) X 33″(W)
Hose Locations = In-Drivers/ Out- Passenger
Hose Fittings = In-1 1/2 ” Out-1 1/2″
Transcooler - YES

2 row radiators have 3/4" tubes, 3 row radiators have 5/8" tubes

Fits: 1968 1969 1970 1971 1972 1973 Chevy Chevelle, El Camino