Standard transmission, polished finish. An OEM radiator just isn't designed to cool a high-horsepower engine, and overheating can take the fun out of using your specialty vehicle quickly. Now, Be Cool has your answer. A high-quality Be Cool all-aluminum radiator will lower your coolant temperature a minimum of 20 degrees, or your money back. GUARANTEED! For parts 16863 through 16866: -Small block engines -(downflow) 6 & 8 cylinder radiator mount -Core dimensions 22w x 18h -Radiator dimensions 22w x 23h