An OEM replacement radiator from Year One of classic INdustries are the same radiator . In other words , 17 1/2" x 22" x 2". They use (3) 1/2" cores on 9/16" centers . The c-body rad have the same dimentions but stick up too far and must be modified to bolt on . There is one aluminum radiator maker that gives dimentions ECP.com gives these numbers . Even the shroud locations . If you have a A-body with a b.b. the shroud won't work unless you have a b.b. k-frame . Schumacher mounts put the motor too far to the right to work . My opinion is that if you're going to spend a bunch of money on a radiator it had better be a drop in . AND cool like a blizzard
