The motor in the Infiniti Red Sport is a badass motor that doesn't encroach on the GTR motor. It seems like a natural home for it in the Z. The next challenge is to offer it with a MT. The only transmission option for the Infiniti is the in house 7 speed auto that isn't very good or strong. But with a tune, you can up the line pressures and get it to shift faster, but there is still a lag from the paddle to the actual shift. And it's still weak.