This Baja Truck Was the 2015 F-150 in Disguise
They kept it hidden by using body panels from the current generation stamped in aluminum. From the outside it looks exactly like a normal, 12th gen F-150 with a skid plate and a lift kit and a cage. They kept the stock air-filter, stock suspension loactions, stock engine, stock frame, and even the stock transmission cooler. That is impressive, especially when you consider the engine they’re running was a completely new, clean sheet design.
I’m not sure if Ford would suggest you take your brand new F-150 on a 1000 mile rally in Mexico right off the lot, but it certainly sounds like it wouldn’t take much to do it.