- Stock #359943 - 1980 FORMULA 233 INTERCEPTOR CUSTOM MERCRUISER'S HIGH PERFORMANCE CUSTOM SHORELAND'R TRAILER INCLUDED Are you looking for a one of a kind boat that will turn heads and make everyone come running? Look no further! The engines were custom made new based on Mercruiser 350 cu. in V-8 as special high performance, with 4-bolt main bearings, roller rockers for push rods and cam. Camshaft is special marine hi-performance "Thumper" with Vortec heads for 330 hp. The engines were built in 2015, but kept in storage until 2018 when first run. Engines now have 82 hours for each engine... read more