2013 Mustang Boss 302 Style Chin Spoiler As title says, a little info on the new 2013 Boss Chin Spoiler. The install will be following later this week. Some of you guys might have seen the install I did on my 2013, if not, here is a little more info. Looking for a good way to dress up the front of your 2013 Mustang? Check out the new 2013 Boss Chin Spoiler. It is an easy way to add an aggressive look to your 2013 Mustang.