One of the most customizable bowriders on the market the Formula 270 has lots of options to pick and choose from when deciding on and designing your ideal boat. 1997 Sea Ray 190 Bowrider1997 Sea Ray Bowrider with Mercruiser 43L V6 and Alpha one drive unit. Chaparral 257 Ssx Premium Bowrider Chaparral 257SSX 2017 Volvo 380HP V8 with digital throttle Duo-prop stern drive 160 hours.