That's exactly what my engine guy told me to do. This is the first time I've actually seen someone mold a newer air dam to an old car. Really doesn't look all that bad.
Hard to see in the picture, but there is an opening in the air dam with a panel below that I attached to the lower rad support, so it does channel the air into the lower part of the rad behind the bumper. "DART67" has a post when he did it to his BB 67 Convertible.
