New Stereo, 2013 Chrysler 200

Greetings. need some info on everything thats required to put a new deck into a 2013 Chrysler 200. i do not know if it has the boston acoustics system as i dont have the car yet, but its already for sure im going to get it. i need to know whats harnesses i need, brain boxes, and what to do to retain the steering wheel volume controls. Are there factory amplifiers? if so how do i bypass it to run my own alpine 5 channel, altho im going to use it as a 4 channel as i already have a Rockford P300-12.