I'm on a 1995, so a 2003 may be different...
I'm 6'3 265lbs. I'm not fat, but I'm not all muscle. I have no issues with the bike. I can stay on it as long as anyone else I'm with when it comes to long ride. I'm sure I can't ride the big as hard as a lighter guy in the corners (speed wobble starts sooner the heavier the rider right?). With my strenght/weight I can throw the bike around fairly easily.
With tht being said I've been told I look like a monkey fucking a football on it. But hey, it's my 1st bike and I gota good deal on it. Maybe someday I'll get that new 1000 kawai is coming out with.
But to answer your question, I have no issues with my size for the bike. You may get some comments from people (I do at least) but they are usually from people who don't know what they are talking about