Unearthing this post a few years back. I’m starting to think about putting together a G32 uni and this mod is pretty spot since there won’t be a 125mm wide inboard disc in the near future - or ever.
Did you make the part directly or do you have a 3D map? A friend of mine works at a place where he has access to all sorts of fancy tools and can make this adaptor.
What is the offset of the inside spokes? The hub I have is probably about the same age as yours - it’s ISIS though, but early ones.