I'm looking at buying a boat with 2003 yamaha HPDI's 200 hp. They're on a Contender that's been tournament fished and the powerheads have already been replaced. The boat sounds like a good deal - I'm just worried about the fact that the powerheads have already been replaced. Does that mean they're pretty much new engines or should I stay away from it?<br /><br />Thanks<br /><br />gatord96@cox.net