In all honesty, you have a very nice exhaust on there, unless it's so rusted it's got holes in it.
Take it off, toss it in a bucket of oxalic acid, vinegar, or my choice, 3:1 murratic acid. Let it soak for a day, pull it out, rinse it well, and hit it with a metal polish- I like a buffing wheel on a drill press with jewelers rouge.
Then wipe it with WD40 and slap it back on. Or send it to a chrome shop and $50 later, it's Purdy.
Its a cool, desirable exhaust.