1965 Ford thunderbird was the very fist car that came with sequential taillights and years to follow . The second car was the 1967 couger and year to follow . Ford was #1 with the sequential taillights , anyone else is just a copy cat . I believe that copying someone’s idea is the ultimate...
There is a tool that measures paint thickness !!! Find someone that can check and compare the thickness to the rest of your vehicle this will help you determine if it’s the factory paint thickness on your quarter panel? Hope this helps you ,Joe.