Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Personally I'd never buy a used exhaust unless it came installed on a truck I was buying. Theres just too many things that could be wrong with it that you wouldn't figure out until you get it installed, and the guy SAYS it has 5000 miles on it....but parts don't have odometers, if you catch my drift.
Magnaflow exhausts have always sounded great to me though, there are sound clips on their website. Great products and great quality, just be sure of the seller and the parts before buying anything. If this isn't someone you know personally, I'd say skip it.
But that's just me. I've been burned before so I'm a little extra-cautious now.