I would have sworn you did the install - maybe I got you confused with someone else though! BTW, I think I was off-base on the ABS thing, the toothed sprocket (stator) needs to match the gearset, so if you swap the whole diff it's all good. My bad there.

If you want a 2.82 gear ratio for a non-ASR 400E, you need the 400SE/S420 rear end (also from non-ASR car). There are three available under $300 right now:

1992 Mercedes 400 140 Typ, (400SE), w/o ASR trac cntrl--U Stk#041583
$300
J.C. Motors Used Auto Parts USA-FL(Opa-Locka)
1-305-687-7878


1992 Mercedes 400 SE 4.0L,AT,CHECK IF ASR TRACTION Stk#4A026
$270
E Auto Parts Inc USA-FL(Jacksonville)
1-800-366-9815


1992 Mercedes 400 SE 12-91,RWD Stk#04G114
$250
Japanese & European Auto Parts USA-FL(Tampa)
1-813-663-9741

Potomac only has them *with* ASR, for $500, but another place in Rhode Island has a few with ASR for - get this - $174! Remember you can't use an ASR diff in your car because it won't have the spot for your ABS sensor. ASR cars use two axle output sensors instead of a single pinion speed input sensor....