So, and I ask this with the most respect possible, would it be best to get a 7753 and gen b23 date wheel if you want to Franken?
I added a gen 7753 to my navitimer, which was easy enough, but somehow mucked up the balance spring, luckily dogwood could fix it.
During the process the chrono seconds hand also came apart (flat hand part separated from the tiny tube) had to press it back on, that was tricky.
Other than that, the 7753 has a great looking flush date but no quickset date change and the case doesn’t have a hole in the side to press the date change button (panerai 187 has this)
So setting the date on the Navi is a massive pain and it lives on a winder.
The reason I held onto that blue Navi I sent you rdross is the movement has a flush date and non working right subdial with quick date change already done and would probably be an easy swap into another watch.