I have a 454 with low hours on it. Has Merc 420 pistons and cam. Double roller timing chain, teflon coated bearing, roller rockers, imco tall valve covers, aluminum intake, holley 750 carb, gil offshore exhaust, merc racing 10 qts. aluminum finned pan, melling oil pump, sea water and crank merc aluminum pulleys, and autolite racing plugs. Needs belts hoses and small odds and ends to finish. It set up for a bravo. Has the coupler and bellhousing for a Bravo set up. Also new alt, circulator pump, t stat and water outlet housing.