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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    L-66 Confirmed

    Oldsmobile · Regular Production Option

    HC 455 2-bbl

    Years 1968 Models 1

    Documented applications

    This page aggregates every documented appearance of L-66 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.