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Radial engine
Aircraft For Sale Top PicksThis 1940 WACO UPF-7 Is a Restored and Upgraded ‘AircraftForSale’ Top Pick
Features including fuel injection and updated instrumentation make this antique more practical in modern skies.
Flying Staff![](https://www.flyingmag.com/uploads/2024/08/Screenshot-2024-08-07-080926.jpg?auto=webp&auto=webp&optimize=high&quality=70&width=1440)
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