WOULD IT BE A SIN

I have a 67 barracuda. Ive owned 69s & now a 67. Ive always wanted a 68 but couldnt find one in my price range. Would it be a sin to put 68 side lights on my 67 ? I always liked the round side lights. Has anyone done it & if so did you splice them in to the front & rear park light wires ? Im still on the fence. Just hate to cut holes in rust free fenders & quarters.
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.