loud-ass flowmaster that I had on my chebby (with 350) for 2 1/2 years. Looks okay on the outside, you can see a little rust where the baffles are welded in. If you shake it there's a little bit of rattling, maybe rust, maybe carbon. You can probably shake it out. If you want it give me a 6-pack of something better than Shaefer and it's yours.