OK one more photo  

Today Kannika told me she wanted to clean the CB550 stainless steel 4 into 2 megaphone exhaust.  It is in poor condition - extremely discolored and heavy scratches.  I told her it would be a waste of time - it will never look good.  Once again I was wrong.  She cleaned with a scotch brite pad and 10% hydrochloric acid solution but it did almost nothing.  Then she sanded with 80 grit (aggressive), then 220, then 400. It was very hard work and her hands turned pitch black.     Exhaust turned out looking like new - shiny with a very subtle iridescence.  Shocked at the transformation.  We will polish with autosol metal polish tomorrow. 
Late Edit:  The perspective of this photo makes the exhaust pipes look small.  They are actually very large and wide in the back.