I recently purchased a set of NOS bullet Taillights on Ebay, The lenses(DURAY and Guide on front and #5943497 on back) are plastic instead of glass and the bezels look good but the finish metalfinishing before chromeing doesn't appear to be as good as I would expect from OEM parts vendors. My first question is did Guide/Duray make both glass and plastic lenses for this light? Second, Was metal finishing less of a concern to GM than in this time frame than in later years?
