I'm surprised that no one has commented on this... "...... i just bought a 2013 Charger SXT8 plus..... "
Not trying to be a jerk, just want you to be well informed, but there's no SXT8 package. There is a SXT, and a SXT Plus, but if it's got a badge that says SXT8 it was put on by the previous owner.
Again, not trying to sound like a jerk. I just don't want you to be talking to some a-hole who starts belittling you because you didn't know. Additionally this should help you find parts when modding. Looking for parts for the SXT Plus (or SXT) should return a lot more results than looking for SXT8.