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Old 04-30-2009, 07:53 AM   #10
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Join Date: Aug 2003
Location: Burke, VA
Posts: 7,635
My Ride: 2003 330i
Cutting the door is done to improve performance (works on both 5's and 6.5's), but is not required. You can mount 6.5's on the door panel if you want.
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