One more point, going to the earlier issue raised about the hex heads not fitting the locking indents in the bumper brackets: mine did fit, though you needed to tap them in to lock with a hammer. You then tighten to 50ft/lbs 65nm on the nuts from inside the cargo area.

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2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.