5.slow99

i have a question for you all. im running a set of four C6 Z06 wheels 9.5 up front a 10.5 out back all with a 56 mm offset. i wanted to run a 275 up front and a 295 out back. i figured i would have to run about a 20mm adapter in the back to pull the wheels out flush with the fender.(i heard the factory offset for f-body was like 38mm but could be wrong) but would i have to modify the fronts as well? would they rub on turns or sit too far inside the fender? plus does anyone have pictures of how the 275 295 combo look on the car. thanks for the help in advance