Cadillac CTS-V - Kooks question

Anyone know what connection pipe I should use on my V...i have a Borla Catback, Kooks only offers Corsa and factory, Corsa is pretty close to borla tho right?

Thanks in advance

We have adapted these headers to different brands of cat backs with very little modifications. Kooks are definately the best of the best, and they fit great on the CTS-V's. Bob