Those are for 70 -72 B and E spindles. I'd use one, 65-72 K-H small bolt pattern setup, or the other, 73 up A or E large bolt pattern set up. I would not mix and match between the two.
Those sleeves Dr. Diff sells are for B/E bodies only, not the KH disk spindles. The A-body spindles are different, and those sleeves will not work. 70-72 B/E bodies did not have KH disks, they used disks that were 2 pieces, but were otherwise almost identical to the 73+ parts. The calipers were actually the same as the 73+ parts (I'm still using the original calipers on my Challenger with 73+ spindles and 11.75" rotors). The only difference with the 70-72 B/E body spindles was the slightly smaller spindle diameter at the inner bearing. The 70-72 B/E rotor was exactly the same as the 73+ rotors with exception of the inner bearing and 2 part construction.
No, you wouldn't want them to spin. But, the bearing rides on the sleeve. The only way the sleeve would spin is if the bearing has more internal resistance than the sleeve to spindle interface, which shouldn't happen if the bearing is in good operating condition and the spindle nut isn't over-torqued.
Maybe Cass will chime in, although if you really wanted to know you could just email him through his site.