Hi Sly,
I did get your PM, sorry, I haven't been around here for a long time....
If you can find one, try an ETA 2000 movement. I found a couple of Omegas on the bay that work fine for the project. You will need to try and find the Rolex movement holder for the case. It fits the ETA, but needs a slight shim to align the stem.
As for the date disc, try and find a Rolex disc for the midsize. With the thinner 2000 movement, you can glue the genuine date disc to the ETA disc and it will work. You will need to swap out the hand fitting height in order for the hands to clear the dial. just make sure the date progression matches ETA. I don't know the caliber off the top of my head. maybe 2135? or 2035? I think the 2035 matches the date.
as for hands, you can use genuine rolex hands, or aftermarket hands. You will need a set for 2035 and a set for 2135. The hour/minute hand from 2035 will fit the ETA, and the second hand from 2135 will fit... or the other way around, I can't remember.
The reason you need a rolex movement holder is the dial is attached to the movement holder. It snaps on.
hope this helps.