no i have a torsen...i went to the track and of the line i sheared of the splines inside the diff. Luckily there is a "peephole" in the middle that i could use a small punch to knock it out with!

why do you ask if it was a stock diff?

1999 Cougar V6 MTX SVT UIM/LIM/65mm TB, I/H/E, Fidanza/SPEC III/Torsen, Koni/GC's, 19" Icon wheels w/ Pirelli rubber, NX Wet Kit