oh, forgot. if you don;t want to buy the adapter for the 2011, you can use a regular signature setup if you are willing to smash up your brand new bed everywhere under the signature to make it all 1/2 inch lower than stock. And yes you can just ignore the ford setupand entirely and put in regular rails but with the adapter now 1/2to 1/3 what Ford wanted initially, I don't think either makes sense.