Anyone who has stock LCAs and a front-end creak when driving over bumps (especially speed bumps) needs to take a look at the following thread. There is a video inside and you can compare your creaking to the creaking noticed in the vid. https://www.allfordmustangs.com/forum...eo-inside.html
To sum it up, it's very likely your LCAs and both sides need to replaced.
2012 GT Premium
401A, Electronics, Rear-view Sensors & Camera, HIDS, Wheel-locks, Security Package