For more information, refer to the Reference Section on Brakes (Fluid):
brake_system

http://xlforum.net/forums/showthread.php?threadid=2057183

Alternative Calipers:

The 2000 and newer bikes have a completely different mounting boss for the brakes. If you want to upgrade to Brembo calipers you're going to need the lowers from a 2000 and newer model. The stock aluminum style is the same price as the chrome version (at retail) so if you like chrome, it's definitely the way to go. ¹⁾