Factory rear E locker FZJ

[Broski]

Are the FZJ locked and unlocked rear housings the same in other words will an E locker third member bolt into a non-locker housing without modifications.
They look the same. The only difference I can see without pulling both thirds is the E locker third member has two studs that are longer.
Thank you in advance

 

[landtank]

You need to notch the open diff slightly on one side. No big deal.

 

[Broski]

You need to notch the open diff slightly on one side. No big deal.

Thanks