I repowered my boat with twin 07 250 yammies last season.bought them with 850 hours on them and put almost 300 hours on them last season.never skipped a beat,changed the oil every hundred hours or so.they .run awesome,troll awesome.i believe 08 and newer you can get the "troll control"for them,which you can increase and decrease rpms by increments of 50 through the tach.,really nice for dialing in your trolling speed