I just pulled up the page on DrDiff site and right above the "Rotors" option you show in your attached picture is where you choose your options for balljoints. You can add the upper adapters I mentioned, Bolts & Nuts for lower big ball joints, and bigger balljoints, or just click the last option and add them all.
Come to think of it,.... if your car already has factory discs, but in the small bolt pattern, you might talk to him and see if you need all the rest of the parts, or if he just has rotors with the large pattern that would match up to your spindle. My guess would be no, but it never hurts to ask.
