I have a 2010 MKS EB with the sport package. I put a set of Megan Coil overs on it this spring. Dropped the back 2" and the front 1" and took it in for an alignment. Not sure if this crosses over to the 14 or not but you need to be able to get back to factory specs to have the car drive properly. The first shop I took it to was freaked out about the change in ride height and I tried to talk them through setting it up properly. In the end they said it would not align and I was going to have to live with it. The rear camber was the biggest issue but they also said that they couldn't get the toe proper on the back. I had read on this form that getting the adjustable bolts would be a solution. I did not like the way that looked as you had to use shorter bolts and different nuts. Would have worked fine I'm sure but it just ate at the back of my head. I read on a different form that someone had decided to elongate the holes in the upper arms by 5mm (1/5" +/-) and that they were able to get back to factory specs. I decided to take this route and grind out some metal. In the end I took it to another shop that was fine with modified suspensions and they were able to align it back to factory specs. It drives like a dream now.
On the coil overs, they were a bit stiff for my liking in a commuter car but it handled like it was on rails. I still had the factory MXV 4 tires on it. I recently replaced the tires with Nitto Motivo's and the improvement was incredible. It still handles like I want it to and it is only a little bit stiffer than I would like it to be.
Everything should remain the same except the height of the car. They had the specs at the alignment shop simply by scanning the sticker.
