Since I struck out on finding anyone who makes a replacement small block radiator for a 74 I bought a used one from the only place I could find one (with no warranty on the core), www.cbodies.com for $100.
Shot of the rear of the radiator.
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Front picture.
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Hit the spots I could with a wire wheel and a polycarbonate abrasive pad on the angle grinder.
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Now...
Cleaning up a 74 Radiator
