Since you're on a 2000 model you might want to add 2 teeth to the rear sprocket or remove one tooth from the front. The latter slightly increases chain wear. You can get sprockets from Vaz, Sprocket Specialties, Renthal and many others. As for rear sets, I'd go with the Vortex jobbies for your bike, you can find them on eBay for around $280 shipped.