Now just replace the dash with the digital one from the CTS-V or some form of the new vette gauges and we have a winner that will plunder the M3/M4 in chassis, steering, suspension, and power and offer a proper transmission which the C63 does not provide... i'm guessing 69.9k base
http://wot.motortrend.com/1505_cadillac_ats_v_to_feature_ls7_power.html#__federated=1
http://wot.motortrend.com/1505_cadillac_ats_v_to_feature_ls7_power.html#__federated=1