What's the best engine paint for the red that's on the early slant 6s and 273s?

This is the OER Chrysler Red from Classic Industries.
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I went through this in 2018 and tried 20 different versions of Chrysler Red, International Harvester Red and Industrial Red and all 20 were different. At that time I was able to get a couple cans of Mopar Red.
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Alan