As stated in other posts. the Turbo 4 is not a real pheasible option for the Camaro. the mass of the camaro would cause the engine to be constantly utilizing the turbo charger and thus reducing its efficiency and its effectiveness in increasing the MPG of the car. I believe scott at one point said they weren't going to go this route due to the issues being presented.
What I'd like to see is a 1.4L turbo Cruze next year..... or Turbo Diesel cruze