What type is the limited slip diff. on the 1990 190e 2.5-16v ? Is it ASD or mechanicaly locked (how can I check what type it is) ? If I change the 3.07 diff with a 3.27 or a 3.23 how will the performance change ? To my understanding it will accelerate faster

but have a lower top speed

, is this correct ? I'am asking this question because I will be changing the diff on my car and I'm not sure I'll be able to find a 3.07 diff.
Joreto
190e 2.5-16v: