Select from the below options based on your modifications level.
Starters would begin with the Brisk RR14S units, as these are the stock heat range. Once you're tuned and turned up a bit on the mods, we would suggest going to the Brisk RR12S units. Then for the big dogs, we suggest the RR10S units; these are the same plugs used in the World Record EMS Ecoboost Mustang.
These each come in a pack of four. If you desire for us to gap them before shipping, please email us the gap as per your tuner's requirements for your specific build.