I want to install a set up 6.5" in the door panels of my Challenger and am curious how to run the wires without having them bend and twist and eventually breaking? New autos already have electrical components in the door that you can just run your wires through the existing rubber boot or gromment. What have you guys done to protect the wiring as it makes the transition from the body of the car to the door? Also, is there enough room in the door panel for a 6.5" by 2.5" deep speaker?