do you mean use the 1570 date disc as the overlay? Glue it to the top of the 2824 date disc? That’s a great suggestion...I haven’t done this before and had always just kind of assumed that the overlays would be just that - very very thin printed plastic. If the Rolex date disc is as thin as the overlay that could be an option. I have done a fair bit of research and with the 2824, raffles spacer, dial spacer, overlay, and 1600 Datejust pie pan dial there is only just enough room.
Yes, that's what I mean. (Not easy to make it line up I understand but a good watchsmith can do it).
I've planned it on one of my builds which is based on an ETA2836 which won't take the gen date wheel. Of course, as you stated, you have to make sure it´s possible and there is room for making it fit but it's worth researching, especially in a build like yours with many gen parts already
It was just an idea to research further.
I look forward to seeing your build, it sounds fantastic!