Depends on who launches better and who is driving. The C6 has a lot less weight than the coupe CTSv. I would think the best outcome would be quicker ET for the vette but a higher MPH for the CTSv.
__________________
Trey
Current rides: 2001 BMW 540iT soon to be manual swapped and 86 C10.
Former ride: 1979 Trans Am WS6: LT1/T56, Kore 3 C5/6 brakes, BMW 18in rims