Just purchased a used system from another viper owner exhaust was purchased by him from vipersbyelite, the welds look very sloppy and flaking! Headers look good!Powder coated, is this normal for exhaust welds to look this bad! Exhaust was only on for 1 year! Does anyone have any experience with this system!! No cats, no muffler in this system, Is this correct!! Please HELP! Any secrets to installing exhaust and does anyone recommend anything before I install this system!! Thanks, George