Restore it. If done correctly, the damage will be a blessing in disguise. As can be seen in the images, there is fairly severe internal corrosion. Since a restoration should include disassembly, they can take care of the corrosion and end up with a display that can outlive our grandchildren. Farm it out to an automotive restoration company if need be. Some of those shops do amazing work and some are very good with aluminum.

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I love sanding.