I am of the old school that says a Corvette should have a V8 or stop making it!, but there is some other applications that the LF3 (TT 3.0L SIDI) would go really well in. The 3.0L delivers in highway fuel economy but is dismal around town due to the lack of low end torque, the turbo's would cure that issue. But then, the dilemma (for GM) is the GenV SIDI's are probably going to be even better on fuel economy so they'll make the power and torque we like with the V8's and get large V6 fuel economy too. The problem then is cost, how much is an LF3 v's a GenV going to cost them to make? Probably double, but for GM selling a Twin Turbo direct injection DOHC Cadillac in Europe is going to look better on paper for the European market than a pushrod V8.