Help identifying 2 way diff

[Zarniix]

Hi all i recently purchased a 2 way diff i was told it may have been a nismo but going off the smooth finish on the center im guessing its not. the oval holes from the research ive done point to cusco but i cant seem to find any info or pictures that match. can any one help me with that? and if its a cusco is there any way to tell witch type RS etc so on

Edited August 5, 2019 by Zarniix

[Ben C34]

Cusco

[Ben C34]

https://www.nengun.com/cusco/lsd-type-mz

[Zarniix]

1 minute ago, Ben C34 said:

https://www.nengun.com/cusco/lsd-type-mz

Thanks mate i noticed the MZ had 4 stripes were as mine has 3 i dont know if that means its somthing else or not could just be witch car its for