im a little late to this party.....but, the '14 F150 has a different front lower arm than previous year. There are a few detailed write ups on F150forum.com buried within the 4756354 threads on what 35in tires make you look like a badass.
rumor is that the '14s are running what looks to be the '15 lower arm.
I have the 2014 FX4 with the DJM 2/4 drop kit. Its been a long expensive adventure to get this installed. After a month from start to finish its done.
The front dropped 2.5 inches the back 5. The stance is great, the ride is good. Tony from norcalss has been great on getting this done. Go with the Belltech shocks. Make sure that your mechanic reads the instructions. If you have 4wd you have to buy an extra set of lift blocks.