Sheer speculation on my part, but with Ford claiming that a new Police Interceptor model will be built on a platform not currently being used in the NA market place leads me to believe that it will use some underpinnings from the Transit full size. That and a planned F100 unibody chassis would spread development costs over three lines as opposed to one purpose built model thus enhancing profit potential at a lower unit price and annual rate of production. Full size Transit is not a traditional body on frame vehicle and is more unibody than anything else. If Ford does this right, it would also likely be a candidate for taxi/livery markets as well. Transit is being eyed for hybrid applications, so it would be logical that any proposed F100 and/or Police Interceptor and taxi units benefit from that type of development as well...
But, at this point, I am only speculating....