Manifold & Riser Kit, Exhaust AL 5.7L MP2K Kit includes parts to configured for both Raw and Fresh Water Cooling Systems. Marine Power high performance semi-tuned aluminum exhaust manifold and riser kit. Fits 5.0L/305ci and 5.7L/350ci engines. Includes: (2) Manifolds, (2) Risers, Riser to Manifold Gaskets and hardware. Exhaust comes unpainted.