rear disc from grand cherokee on a 8 3/4

OK,
here is what I have learned:
Jeep changed their rear disc breaks in the year 1999,They went from an 11.25" rotor set up to a 12" rotor set up on all of the models. Maybe these are the ones everybobies having trouble with.However before that the 11.25" rotor setup will bolt directly on to the 8 3/4" axle and everything centers up. I even got new pads to check the fit and all is good.
As it happens without knowing this I ended up getting the smaller setup.These were off of a Cherokee not a grand Cherokee.It couldnt fit more perfectly if it were engineered for this axle!Isn't God good!
Yes you still have to drill the fifth hole and you still have to enlarge the axle hole in both the backing plate/bracket and the dust shield.
The only real issue I have left to solve is the off setting of the bearing because of the backing plate. I will tackle that tomorrow.
In the mean time here are the part numbers of the smaller setup:
Backing plate-3212245
Dust plate-1E3257A
11.25" Rotor-53601 mine was made in Canada

I just noticed the post comparing the distance flange to flange on each side. Yes this is a B body set right now, so when I cut it down I will have to order a B body axle in an A body length.
the current measurements are:
outside face of adjuster to back of axle flange is 1.75" plus the flange which is .375" equals 2.25" to the face of the axle flange.

I promise pictures as soon as my cell phone cable gets here.
Andrew