1968 Dodge Dart GT Sleeping Beauty?
I was going to let the body shop drill and space the rear marker light and Dart letters. The marker lights require a 1 3/8” hole. I got a $9.00 step bit off Amazon. It is the best way to drill holes in sheet metal without having the bit wander. That light and the letters follow/center the crease or body line.
I made a template for the letters. It did not transfer perfectly, but it was pretty close.
Top of the tape is the center of the body line.
Notch was needed for an index cast into the marker.