I recently replaced the ailing radiator in my 29 CCPU. I purchased a re-cored 4 row original from Bert's in Colorado. I dealt with Steve. I can not say enough about the outstanding service I received.
Last summer we had a few days where the temperature hit 114* and no matter how hard I pushed the old girl I could not get her above 180*. I couldn't be happier with this purchase.
Dan