LSD - Help identifying

[SSJ-S15]

Hey guys, so this 1.5 way LSD came out of my S15....trying to figure out what brand it is....Thinking it may be Nismo since every part on the car when I got it that wasn't stock was Nismo...any help is appreciated!

http://i.imgur.com/1Zum7kG.jpg
http://i.imgur.com/DGD3xX1.jpg
http://i.imgur.com/bFetRyg.jpg