I have a 540 steptronic with M5 kit and original wheels that I'm trying to turn into an M5! The reason being is that due to an accident many years ago I have to drive an auto. I would really love to make my car identical to an M5 but need some parts. I'm always learning every day that something is different on my car. Even though it looks almost identical to me!! So I need a set of mirrors, speedo, someone told me the HeadRests are different too??!! So I need them, I would also be interested in other bits I dont have that you guys or girls can help me out with that you think I might need! I read on here somewhere that the interior mirror is different too!! Is this true?? Please please help!!