Radiator for 1955 1956 Chevrolet cars using 6 cylinder mounting position This has OE 55 tanks but has had a modern 3 row core installed by a local radiator shop I had this work done and ran this in my own car for many years with no problems. It does have the Automatic transmission cooler in the bottom tank. PHONE CALLS ONLY I DO NOT TEXT. If I do not answer Please leave me a message and I will call you back ASAP.