I have a 2014 GT. It has been lowered 2 inches at all four corner. That leaves 4 inches of ground clearance between the chassis and the road surface. The rear bump stops have been shaved down to about half. My car has been lowered for 19 thousand daily driven street miles with out any issues (no bottoming). I do have properly tuned springs and dampers so that helps tremendously and the ride quality is very very nice. I could actually go lower but its not necessary for the street. At the track I could easily lower another .75 to 1 inch.
2014 Mustang GT DIB, Track Package, Recaro Seats, Reverse Sensing/Security
Picked up: 5/14/2013