One of the parts that always needs replacing during the restoration of a 1965-66 Mustang are the Chrome Tail Light Doors. Through the years there have been a few reproductions available-some better than others. The ones from Ford are obsolete, but there are some NOS bezels floating around out there for a price!
Even on a super, high end restoration, we would recommend our USA made Chrome 65-66 Tail Light Bezels. These are very, very nice parts and actually superior to the NOS Ford Service Part. Our part number is ER-3512, and they are only $49.95 for a pair.
If you are doing a budget restoration, we have imported Tail Light Bezels also for only $14.95 each. The part number is ER-35.