I am currently running a 3.07 medium case torsen diff from a Z3. I read a few threads by some guys who race Z3M and E30s and they were advocating the torsen because of the rear trailing arm setup we have. The smoother engagement of the torsen lets us get on power sooner, so far I haven't had any issues with it and the rear end is either planted or I can throttle oversteer with an easy to find limit. __________________ ~Dave~
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