check on rear sprocket size, I wouldn't be suprized if someone swaped them out to a larger one for faster acceleration/lower top speed, I'm not sure how small of sprockets were made for those, most likely nothing very drastic, but you also might be able to find a tooth larger for the front.
check for stock exaust on Ebay, with it being practicaly new, the stock set up could still be in good shape, and those stock parts become commen, and cheap.
Thanks everyone for the replies.
I could not be happier with this bike.
The bike is actually pretty heavy, like 430lbs or so. It does not have an aluminum frame.
I want to lighten it up a little bit. Which will mainly come through putting a different exhaust on it. Sorry clencher. I will most likely go with a 4-2-1 single side design. From what i have read the full titanium exhaust weighs in around 7lbs for the whole header back.
Like this one here....
What is really sad is how this bike weighs 1500lbs less than my car and has probably 50 more horsepower.
Order some golf shoes, otherwise we might never make it out of this place alive.