I don't really know how to remove the entire ceiling panel. If anyone has an idea about that I'm willing to try it. Might make the overall job easier. I saw some videos of someone screwing washer into the ceiling, but I'm not sure how much room I have to go and don't want to puncture the roof.

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2003 X5 3.0i Silver (build 07/03)
2006 X5 3.0i Blue
1977 Ferrari 308 GTB
1994 Ferrari 348TS Speciale #14/15
1989 Ferrari Testarossa