Join Date: Jul 2004
Location: Redondo Beach CA
I don't know that it's for keeping fuel out, probably more a guard for keeping rain/water off the light for the license plate and out of the gap between the valence and the body. It's been a while but I remember putting in some kind of rubber strip when I restored my 69.
69 Mach One, 428CJ, Legend 5 Speed, 3.91's.