True. I own just such a beast--the 2000 model year, in a 58cm, coincidentally.
But assuming the one you're looking at is newer, swapping the stem is your only choice. They can be cheap or dearly expensive depending on your taste. Instead of longer, you'll probably want shorter with a higher rise--something that puts the bars closer and higher. Seven degrees is typical, 17° ones are also common.
On the other hand, you may find the aggressive position of the 1000 to be kinda fun. I like mine a lot. It's a blast to sprint around town on. But for rides over 50 miles or so, I need to be on my other bike.
It's a 2006 model with the 17 deg stem.