So you got your BMW M5 and you want to take it one step further in the modding department? What do you want to do ? Engine , Exhaust , Wheels - yeah those are all great add ons but why not add full body armor for those drives through the bad parts of town or for protection from your ex girlfriend. A Brazillian M5 owner has added full body armor (resulting in a gain of 185 kg) to his Black M5 Beast adding another $35k to the total cost of the vehicle. No word yet on how this adding of Armor has affected the performance of the M5.