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Old 03-10-2011, 09:38 AM   #5
xixixi
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Join Date: Aug 2009
Location: St Louis, MO
Posts: 3,008
My Ride: 01 330x-xi
As far as I know any/all diffs will fit as long as you get the proper gear ratio. Shouldn't have to come from an xi the rear diffs are all the same.
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