The front and back rock/splash guards where recently removed from my '54 chevy 1 ton panel. The front guard is in good shape but the back guard is rusted thru and in bad shape, needing to be replaced. Question: what is the replacement part. It is not the same as the 3200, as that bumper is concave at the license plate. Is the '54 panel rear guard the same as the '53? I need to list in the parts wanted section for a rear guard.