Not sure if this will help, but I have a saddle that fits the '80 or '81 frames I have. It's been recovered, but is otherwise stock. Without the stitching, it looks a lot more streamlined to me and strangely feels more comfortable. If my plans for my project weren't going in a totally different direction, I'd keep it for myself. As is, I am willing to part with it if you're interested.
(I have better pics on my home computer)