Wings for S1's were exactly the same as those fitted to the XR3's/base model mk3's, be it with or without indicator.

Any car made before 1986 that didn't come with side repeaters don't have to have them, but any car made after 1986 has to have them for MoT. Your being an 86 means you have to keep them.

What MJC said about positioning is correct. I know several peeps who have bought repeater-less wings and put a hole in higher up so the badge is more visible, but the true ford way is the way you have them now.

HTH