Disc brake caliper brackets 73+
from Mopar action:
Slider adapter are also made for each of the two rotor sizes. Measure from the center of the mounting hole to a flat surface. If itÂ’s 3-1/4", it fits the small rotors, 3-5/8" fit the biggies.
http://www.moparaction.com/tech/archive/disc-main.html