Check out autocity1958 on Ebay motors. They have a nice original style radiator in aluminum with 2 row 1 1/8th tubes. Painted version $249 with free shipping, but, I know they offer unpainted for less. I bought my 69 Fairlane Cobra radiator from them. Super nice radiator and packaged very well.
Brian
I have an Auto City Classic stock appearance aluminum radiator in my 59 2 door sedan, with a 428 Cobra Jet engine. It looks almost identical to a stock 57-59 ford radiator, including the shape and fins of the top tank. I also has 2 1 1/8" tubes, and I am very happy how it cools, I have a 160 thermostat, and it will cruise down the road or freeway right at 160. In gridlock, or long idling periods on a hot day, the temp does slowly start climbing, but pretty sure that is more of a airflow/fan issue, since these cars never used a shroud from the factory. But not much of a concern, as it takes quite a while to creep over 22o, and as soon as you start moving, the gauge drops back down quickly. If the AutoCity radiators for Mustangs and other cars keep the factory looks, I think they are a great radiator for the money. By the way, Auto City offers lots of other products, my 59 also has a new gas tank and windshield that I bought from them, they also have door and side glass, disc brake conversions, and lots of other stuff too. They are in Minnesota, and they have been great to deal with. In fact, they travel to many major swap meets, and can deliver to the meets they attend. 57tru 59 Ford car windshields have large wrap around sides, so the take a much larger box than most windshields, so shipping can be pricey. So when I noticed that one of the swap meets they were going to was the big meet in Portland Oregon, I arranged to have them deliver the windshield to there, and I picked it up from them directly. That way if the windshield was damaged in transit, it wouldn`t be my problem, plus I saved the shipping costs. Worked out great.