Titmans actually do have that info somewhere because when they sent me 82 spokes instead of 83 spokes, I helped them get it. One part of that process was actually showing John an 83 at CD8 and I know he took pictures of the hubs etc.
My understanding of the major difference is that 82 are bent at approximately 90 degrees at the hub whereas 83 are a smaller bend (maybe 14 degrees). If they rat through the book where they keep their specs they should be able to find them, if you are clear about whether you need the severe or shallow bend.
I think some of the problem is that some parts lists say that the spokes were the same in 82 and 83. Not sure if that may have been the case in other parts of the world, but it wasn't with mine and many others I have seen.