For my 2003 SKM I ended up buying compete front caliper and rear caliper assemblies from them. And recently ended up needed new style master cylinders as well. The guys in the link above had everything, but not much in the way of rebuilding what I had on mine. It’s great now though. Here is what I did use on mine for fronts. Looks like they are having trouble getting them again.
Front or Rear Brake Caliper