Probably not the easiest thing to identify with pictures alone, but I have to at least try

Pic #1

Pic #2

Pic #3

I don't know how to do thumbnails.

Thanks

 

looks kinda like a mazdaspeed?

 

So it doesn't look stock? I've emailed Kaaz to see if they can lend some insight.

L1 P013 is stamped on the side and I can't find that on the Kaaz site.

 

Well technically a Mazdaspeed is stock.

I was looking at an rx8 mazdaspeed diff, and the pillar looking things next to the ring gear mount holes look very similar. not sure who makes the Mazdaspeed diffs... Could be kaaz??

 

Well, I guess that makes me feel a bit better, but I'm still curious as to what it actually is. I appreciate your insight.

If anyone is looking at these and needs some more pics let me know.

 

it doesn't look like stock, mazdaspeed or kaaz....

that taper opposite of the gear is odd, I'm not sure what it is.

can you tell if it's a clutch type? take some pictures through the holes in the side of the diff (not the holes where the axles go through, the other ones)

 

These are the similarities to me.

Left is a RX8 mazdaspeed., Right is OP's diff.

 

I'll take some when I get out of class this evening.

 

This is very interesting. Thanks for the side by side.