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.
YES SIDE LIGHTS ARE A SIN!!!