Recent content by br549

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    Cadillac CTS-V Forum Long Tube Headers on Factory Exhaust?

    I just bought my cts-v coupe. I put a cold air intake w/ k&n filter, I would like to put long tube headers & connect them to factory exhaust with cats & mufflers. 1. Does anyone sell long tube headers I can buy to do this? 2. Does anyone know what size the factory pipes are 2.5" or 3" ?