Cadillac CTS V Race System 2009-2015CTS V Owners have an opportunity to take that built in HP to another level with ARH's 100% U. S. made 304 S S header system. Designed to handle high horsepower +1000hp builds. The system comes with 2" primaries with 3 8" thick flanges and hand ported inlets, the trademark merge collectors with scavenger spikes and V Band Clamps, a 3 1 2" x pipe that comes as a full system or long system option that route back to the rear axle. The installation is