Buyer be ware that even many aftermarket exhausts claim they are "stainless steel" but are made from varying grades of SS that will still surface rust.
For example, the Stillen CBE is all 'stainless' but the muffler and tips are 306 SS which won't surface rust while all the piping is 409 and will most definitely surface rust. Caveat is that Stillen has a lifetime warranty on perforation, so it's not worth worrying about. And with their exhaust, you can only see the 306 parts, so you'll never see rust unless you wiggle under the car.
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2013 Cadillac V-Wagon, RIP Z
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