i have wanted to do this to mine also. i found a how to somewhere a few months ago. i'll see if i can find it again. it was pretty easy. i took my armrest out at one time. uses torx screws located under the black storage trays inside the armrest sides.
color: anthrecite metallic
wheels: style 89 E66, 19X9F 19X10R
ext. lighting: 8000k D2S & LED plate light
*want to get sport rear diff*