I sold my 2013 Brabus about two years ago and I've regretted that decision. Anyway, I found a 2009 with under 50k miles. Whereas my 2013 had the LED running lights and built in GPS, this one does not. So a few questions? Anything in particular to look for? I spoke with the seller and he is the third owner, clean CarFax with no accidents. Tires are new, rims have very little curb rash, recent oil change and the car looks very clean except for a small dent in the Tridium cell. How hard would it be to pull the radio out and put in a factory GPS like my 2013 had, are they plug and play? Also, If I buy it I'd like to replace the front bumper cowling to add the daytime driving lights. Is this doable as in plug and play?