To the best of my knowledge, headlight washers were a standard part of all Z22 Rally Sport cars for 1969. It was the case with my '69 RS Coupe.
Looking at my car, the backup light cut outs in the tailpan valence appear to be flush. However, I've never had them out so I'll defer to someone who knows for sure.
Tried to send you a pic of the backup lights in my car, but for some reason it wouldn't go through.