Help identify center diff

[iroc_g]

yes, this is a shep trans.

And no, this is a different trans than your buddies. I was leaning towards that one, until I discovered I needed a new t-case as well. So, I found somebody selling a matched setup, and just went for it.

I'm pretty sure its the real deal. Right box, paperwork, and tranny is obviously freshly built based even on appearance alone. I just looked in at the center diff, and from what I remember, it looks just like my stock trans did. I assumed it would look different. So I was hoping somebody could tell me how to tell before I install it tomarrow.