Remake of the 260ci V8

I would like to see the 260ci V8 make a come back for the mustang or for another rear wheel drive vehicle. The 5.0 coyote engine is a great engine, but C.A.F.E. requirements are going to keep getting higher and by 2025 the average fuel economy rating will be around 52.6 mpg with that in mind the 260ci would not only save more fuel, but it will still provide the power people demand only in a smaller package.