a bud of mine did an axle swap with the rubicon front axle froma newer toybox. he is happy! but i know peeps that have taken the 9 inchers out of the laye 60"s bronco's & made them work pretty easily. there is a perfect 9 inch swap but extremely hard to find & thats out of a lincoln ( i forgot the name). its the ford granada body but the lincoln version of it. it has a 9 inch that is a very very good match & has disc brakes on it with ebrake.

93 xj stroked 4.2 w/4.0 head avenger supercharged 6.5" long arm 35" buckshots rubicon 44's front & rear