What is the absolutely correct blue engine paint color for a 74 Duster?

Guys/Gals: I'll be pulling and repainting the slant six motor in my 1974 Duster soon. I've seen many versions of the blue paint used to repaint these engines, so which one is the actual correct blue paint to use on a St. Louis built 1974 Plymouth Duster? Seems like when I go to a car show, every

For Sale: 1974 Plymouth Duster

AUTOMOTIVE SPRAY PAINT – Dupli-Color Engine Enamel is a high-quality vehicle paint that contains Ceramic resins for maximum heat dissipation and gloss

Dupli-Color DE1631 Engine Enamel Spray Paint with Ceramic - Chrysler Blue - 12 oz Aerosol Can

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What is the absolutely correct blue engine paint color for a 74

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1974 Plymouth Duster Midwest Car Exchange

Dupli-Color DE1631 Engine Enamel Spray Paint with

What is the absolutely correct blue engine paint color for a 74

1974 Plymouth Duster for Sale

Original engine colors?????? For A Bodies Only Mopar Forum