Years ago, when I was in college, my '67 Barracuda became like a magnet getting hit---but never while moving, at stop signs! After the fourth dent, my buddy's father who owned a body shop found the problem: the recessed direction signals couldn't be seen from the side. He added the side blinkers from a 1968. Say what you will about whether it's kosher or not; they did the trick and they looked and still look just fine. They've been that way for thirty-plus years.