Has Anyone Ever Tried Rear Disc Off A Grand Cherokee?

the caliper bracket is big enough for the timken to fit though.....the caliper bracket bolts on the housing first just like the drum braking plates then you bolt the bearing retainer flange and axles in... the only thing is the caliper bracket is about twice the thickness of the drum backing plate...which to my understanding would move the bearing and race a 1/8 inch futher outward ...would this affect the bearing? would the green's still work if i go that way?