1998 7.4 (454) Mag MPI Mercruiser Exhaust and Riser Replacement SD 480p

1998 7.4 L Mercruiser Exhaust and Risers with 3" spacer Replacement Loctite 510 Sealant https://www.amazon.com/Loctite-442-51... Permatex Aviation Form-a-Gasket https://www.amazon.com/Permatex-80019...