I have found that the success in building the Kelsey Hayes disc brakes is not buying junk rotors (Centric) and buying quality used parts to begin with. The left hand threaded studs are no longer available new (unless you find a stash) so you will have to used rights. Off the top of my head the stud part numbers are either 610-130 and 610-131 I don't remember which is right and which is left. I have three sets of Kelsey Hayes and I love them.
hemi71x is a member that rebuilds them when he finds some and has sold the all over the world.
Here is an example of what he has sold .
http://www.forabodiesonly.com/mopar/showthread.php?t=218827
Some of the aftermarket kits I have seen use Celebrity calipers so in a few years how available will those be?
