rear end question (car not me)

i have the chance to buy complete rear end out of a 2004 trail edition Cherokee with a dana 44 with 3.73 gears and posi and disc brakes.

im waiting on info on the width and gonna measure mine also in the mean time


the car is a 70 swinger that had a very small rear end ( maybe 7 1/4 ??) and now has a rear o swapped out of a 74 factory v-8 its not a 8 3/4 so maybe 8 1/4 ??

going out to look now at it for more info and measurements

thanks in advance for info on anybody that might have done this swap. i don't wanna mess with axle length and what not and will just buy a sure grip with gears for current rear if its to much work.