my problem is that a lot of them seem to claim these are an exact fit- except a few do say they use a slider caliper.
if you look at
http://www.mbmbrakeboosters.com/vmchk/Spindles/Mopar-B-E-Body-Spindles-with-Caliper-Brackets.html
it shows a slider caliper bracket (at least it looks like one to me).
verses the ebody bracket that uses a Pin and rubber busings (I dont have a picture of the bracket on my car but the calipers look like
those calipers dont look like they fit the brackets in the above picture