Do the rubber seals of the MACE PERFORMANCE LOWER INTAKE MANIFOLD GASKET KIT TO SUIT HOLDEN ECOTEC L36 L67 SUPERCHARGED 3.8L V6 have locking pins?

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• What materials are used in the MACE Performance Lower Intake Manifold Gasket Kit and the MLS Cylinder Head Gasket Set for the Holden Ecotec L36/L67 Supercharged 3.8L V6?
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