I know a lot of variables play into this, but I am curious as to how many engine hours you guys are seeing on these engines? I'm a little new to this arena and have no idea what 'typical' engine hour life may be on an engine that is maintained well and running good oil. I'd say that anyone that has a high horse power engine is more than likely going to be running it fairly hard. Is 500hrs plus normal for an engine? I just threw that number out there - I'm currently at about 175 hours on a 2004 200HO.