detroit rear, or heck get a cheap lunchbox locker.
fwiw, the e-locker is fine. but if you do elocker, you cannot swap the carrier for any other locker. i think you can do some sort of LSD hybrid using a supra diff, but not certain..........
edit, the only reused mounting on my axle swap is the front panhard mounts on both axle and frame. lined up perfect for a d2.
oh and spring perches on the frame.
I did use off the shelf toyota length tie rod and drag links as well as modifying the pitman arm to fit a toyota tre.
was it worth it? absolutely. I would 4 link the rear next time instead of the a-arm i made.... this is why: toy mini on right, fzj80 on left