You can use
these. Which are period correct for 38. Look at the "skirts" link in my sig to see what they look like on a vehicle. They are correct for cars and trucks. Chevs is getting pretty proud of theirs I see. If you want that type of light call Kool Rides @ 620/442-8500 and ask about theirs. They have one, like what is in the link, on the shelf marked $75 that has the park/turn signal set up. I don't know if they have a pair in stock but they can order them.