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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    M38 / M40 Single-source

    Pontiac · Regular Production Option

    Turbo Hydra-Matic 350 / 400

    Years 1970–79 Models 1
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    Also documented for BuickChevrolet

    Also on its own page M38

    Documented applications

    This page aggregates every documented appearance of M38 / M40 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.