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Old 10-20-2008, 01:13 PM   #2
n2Bimmer
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Join Date: May 2007
Location: calii
Posts: 9,670
My Ride: Loves Corners
not sure about the M3 but on my 325 i didnt drill anything, yes get RSM's, you may want to search my KW install so you can get an idea, are you DIY.
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