I have a Magnacharger on my 2012. I used the Motorcraft SP-524. This is a double platinum plug, one step colder than stock. It is supposedly the same as the FRPP cold plug, but does not come pre-gapped. You will need to set the gap at .035. I paid just over $60 at my local Ford dealer for 8 plugs. No problems here.
2012 GT premium 6r80 Kona Blue with Saddle interior : Magnacharged, 3.55s, BFG G-Force Super Sport A/S 255/45-18, GT500 axlebacks, Saleen grill, CS lower valance, SLP trunk panel, MRT adjustable head restraints, BOSS oil cooler, BOSS brakes lines, C-Max ceramics for street and SP Performance Street Plus pads for light track duty, NAPA 5.1 brake fluid, BMR springs, LCA relocation brackets, panhard bar, Steeda ProAction shocks and struts. GT500 strut mounts, other small mods. Daily Driver.