I have a 2013 Lariat that has the myford touch screen audio system, though it doesn't have the Sony sound system or navigation.

The factory speakers sound good to me, just needs more bass. I would like to add in a sub under the back seats. How difficult would it be to add in a sub to this sound system. I have done custom sound system installs so that isn't a problem. I would just like some idea of what I'm looking at before tearing into it. I have seen the kicker soundgate powered sub, but that is a bit too much for me.