Re: 2015 Corvette Z06: Only a 1.7 liter TVS Supercharger!
That CLA45 is interesting mainly for the "Compression ratio dips to 8.6:1 to suit the 26.1 psi " which means an effective compression ratio of about 15.6:1, diesel territory. At that level you really do not need a spark plug but direct injection (only way to avoid detonation) and a very stout bottom end is a must.
So what you have is a responsive small gas engine for good mpg at part throttle and the torque of a TD engine at full chat.
Drag of a 2 liter, part throttle torque of a 2.3 and max of a 3.6 the real change is that while the spark plug can be offset a bit in the chamber, the injector nozzle must be in the center so need a 4 valve head.
Also the head needs to be optimized for exhaust rather than intake but that is easy for an inline engine.
Just some thoughts.