Maybe a dumb question, 11.75 3 piece rotors?

The large rotor swap is popular because it's effective, relatively inexpensive, and if you find or have the correct set of caliper brackets for your existing calipers, the rotors and caliper brackets are all you have to change out. The swapover would be possible without even loosening a front brake line fitting, if you were careful and knew what you were doing.

Got a few bucks burning holes in the bottoms of your pockets you don't know what to do with and running out of brakes coming off that long back straight at your favorite road circuit. Andy Finkbeiner (AR Engineering) makes brackets and aluminum hubs to adapt on late model rotors and modern calipers.