How do you change spark plugs on a 2006 dodge charger?

The black boxes on top of either side of the engine are the "coil over" plugs. Unplug the harness going to it, Remove two screws per coil over, and carefully pull straight out. Then you can access the plugs with a 5/8" spark plug socket and extension. On 5.7 and 6.1 engines there is 2 plugs per cylinder.

Just reverse process to install and hand tighten plugs then torque wrench to 11-15ft lbs.