- Stock #341125 - Mercruiser Hi-Performance Series 500 engine, stored indoors, vinyl in great condition, Trailer included !! Formula Fastech 271 is a classic go fast boat designed in 1999. The gem of the boat is the huge Mercruiser hi-performance 470 horse power engine. The stern drive engine has a Mercruiser Bravo One Outdrive with a stainless steel 4 blade prop. Compression checks were also performed in 2023. Engine overhaul completed at 220 hours as part of factory recommended valve spring replacement at 200 hours. All. Service records available since the seller purchased the boat in... read more