Am I to understand that these pieces:

RealOEM.com - Online BMW Parts Catalog

cannot be reinstalled after this mod? Or do they require modification themselves to fit?

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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim
2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim