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Old 10-29-2012, 12:52 PM   #2
DangerousMind
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Join Date: Nov 2005
Location: SF Bay area
Posts: 992
My Ride: Sierra 1500 SLT
That e39 subframe will not fit in an e46. You will need to go with an aftermarket lsd unit for the e46 non-m carrier or get an m3 rear subframe and diff assembly. If you go the m3 subframe route, you will need different rear wheels due to a change in offset.

I believe that the m3 suspension fits if you knock the alignment dowel out on the front strut towers. i cannot confirm for sure though.
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