I noticed that 2008 BMW X5 4.8i has a nicely chromed kidney grills in the front. But 3.0si doesn't seem to have one; it looks like just a bunch of vertical black plastics.

Is there any option I can have the 4.8i grills with the 3.0si? Or is that the way BMW wants to differentiate the two products without any options to choose?

Thanks.