454/500H.P. Magnum shortblock,Crane 500 EFI hyd. roller, lifters & rockers, fully ported Merlin 345VR heads 2.250X1.900 Manley inconel valves, Dart intake, Holley 850, Thunderbolt ign. Engine is complete w/all accessories crossover, sea pump, alt, starter, harness, bellhousing, coupler etc... 50 Hrs. since full rebuild. Ran 85 mph in my 27' Kryptonite. $5500 contact for pics, they wouldn't upload.914-262-1898 Stainless marine exh available $1600 addl.