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My car's a 71, 350 Auto but no AC. I used this Dewitts aluminum two-row from Corvette Central. Corvette Central Dewitts Radiator
The design is pretty much identical to what you have there and it fit my car like a glove.
When I was shopping for mine I also considered this Cold Case model from Summit but they were out of stock at the time. Summit Cold Case Radiator
It's a little bit cheaper than the Dewitts from Corvette Central and looks to me like it'd be an exact fit as well.
Have you considered getting the existing radiator repaired? Local radiator shops can usually repair any leaks and chemically clean out the inside. I think it cost me around
$ 120 to have mine refurbished, and it’s the one that came on my 73 SB, so it fits perfectly.
the radiator is currently at a shop for inspection and repair.
but the radiator is very old, and i‘m not sure, if we can rebuild it for a reasonable amount of money.
on the other hand, shipping costs to europe are insane at this time.