adding rear disc breaks

4x4fever

New member
I have a 94 xj with Mopar rear axel an drum breaks. I came across a 97 grand cherokee with mopar rear axel an disc brakes, How much trouble is it to put the discs on the 94 axel an will my proportioning valve work?
I'm gonna do it but I thought maybe somone has done it an could give me a outline an save me a few problems
 
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