Black Pearl

I appreciate all the help. I counted the teeth and came up with the 3.545 ratio. I could not locate a stamp anywhere on the ring gear.. Thanks! Keaton

Hello all, I'm doing a STi limited slip differential swap into my 1978 280z, and I was wondering if someone could help me identify my STi differential. I was told it was out of a 2008 STi which would make it a 3.54 gear ratio with a Torsen limited slip unit, correct? I cannot find the gear ratio stamp on the ring gear where others have shown it located. Also, does it look like it has the Torsen LSD unit? Any help is appreciated! Thanks, Keaton