Yes I have tries my sach in the sram. It does fit. I do have another toggle chain that sort of fits my sram. I dont know where I got it. I guess if the thread is right and its long enough to get out the hub it does not matter.
I will have a look. I had a LBS that had some really old stock years ago maybe I got it there. Never tired replacing the click box it, as I had a work around on my mezzo. I dont have a sram birdie. I do have s sash dual drive wheel I may fit in future.