Flowmaster made a catback specifically for the 6.0 liter Yukon Denali and Cadillac Escalade. I've had this on my Denali for about 1500 miles. Still looks nearly new. The sound is perfect! Not too loud, but loud enough to be deep. Good ol' Flowmaster sound! It comes with a 50-series, a resonator, and of course the 4" Flowmaster tip. This was around $500.

Will sell locally (Phoenix AZ area) for $300.

If I have to hassle with shipping it: $330 plus shipping.

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andrew.wheaton@wellsfargo.com