RPOARCHIVE
Loading index…

    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    Y48 Single-source

    Buick · Regular Production Option

    Super Wildcat 425 cid dual 4-bbl V8, 360 hp (corporate RPO)

    Years 1964 Models 1

    Documented applications

    This page aggregates every documented appearance of Y48 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.