I am getting the sd first was told Feb deliver, then April then March and today they say May. I ordered in November so dont feel too bad. I do believe worth waiting. Mine by the way is a replacement for a lemon 3.0d.
When did you order?

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2008 Saphire Black X5 3.0sd
2007 Space grey X5 3.0d
2002 Titanium X5 3.0d