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8M0164159 Exhaust Conversion Kit This kit contains all the parts necessary to convert a MCM small block V8 engine with standard cooling and no risers with wet joint exhaust manifold & 4 in. O.D. center rise 7‑degree exhaust elbows to dry joint exhaust manifolds and elbows. Note: Engines with freshwater cooling &/or risers may require additional exhaust elbow gaskets to be ordered separately. Fits the GM small block (305, 350 & 377 CID) engines with the wet joint or dry joint 4 in. O.D. center rise 7‑degree exhaust elbows. 1987‑2004 MCM sterndrive engines (s/n 0W309999 and below) 1987‑2001 MIE inboard engines (s/n 0M316999 and below)