I bought the covers from Redman CB Stop. He has the chrome and the gold ones too.

Diamond Plate Chrome Covers - http://redmancb.com/diamond-plate-radio-covers-chrome/
Diamond Plate Chrome Bracket & Knobs - http://redmancb.com/diamond-plate-bracket-kit-chrome/

Diamond Plate Gold Covers - http://redmancb.com/diamond-plate-radio-covers-gold/
Diamond Plate Gold Bracket & Knobs - http://redmancb.com/diamond-plate-bracket-kit-gold/