PTZ89stang

HEY GUYS SORRY IF THIS HAS BEEN ASKED IN ANY OTHER THREAD BUT I TRIED LOOKING THRU THEM AND DIDNT FIND ANY....I HAVE A 89 LX WITH A 4 CYLINDER THAT I AM CONVERTING TO A 5.0 AND I WAS WONDEIRNG IF I WAS GOING TO NEED TO CHANGE THE REAR END I AM NOT SURE IF THE 89 LX CAME WITHT HE REAR END FOR THE V8 AND 4 WAS THE SAME SO I WAS WONDEIRNG IF ANYONE KNEW THE DIFFERNECE BETWEEN THE 89 LX 2.3L REAR END AND THE 89 LX 5.0 REAR END THANK YOU