I'm still new to lightnings so I apologize if this is a stupid question. But does anyone have any pictures of stock exhaust? Because I'm not sure if my truck has aftermarket exhaust on it. I got underneath it and there's no name or markings on the muffler but there are band clamps on the flow tubes. It does have throaty sound to it and 3" tips. If someone can help me out with this issue I'd appreciate it. Thanks