jeep cherokee rear in A body

from all the research i've done ( my wife's wondering what i could be looking up for so long)
lol, i am going to try to find an A body rear and spend the money up front at least the correct rear,lots of variables for ford rears and cherokee,s definetely doable choices,but would have to rely,or pay for welding, thanks for all the replies there's lots of info and posts about pro's and cons to help,thanks Fabo