I have a 06 Mustang GT & would like to install a amp. So my question is, would it be possible to install a factory amp or should I go after market? As far as the factory is concerned, I figured that most cars usually have the set up for additional factory options. So what would be easier, factory or aftermarket? I don't want anything to shake the windows of houses as I drive by, just want to add a little kick to my stereo that sounds a live flat & seems to be missing something. Thank...

Amp install