When I did mine it was exhaust manifold (mine wasn't a crossover it was separate Plugs for each). Heat exchanger anode/plug, blue plug by raw water impeller, pull impeller (buy the tool 5 minute job). Anode/plug v-drive. Change oil, all 16 plugs, drain all ballast, pulled rear bags to dry out lockers, changed all 3 ballast impellers....4hr job