Totally agree !!!!!!
In my opinion the 2783 was the best module of the mechanical watch world outside the inhouse brand watches prior the the quartz invasion. They were robust well designed ( incabloc setting) and easy to work with unlike the later generation higher beat 2824-2 where they are a pain in the A$5 to work on during a service!!! Most newer 2824 are a pain with their novodiac cap jewel spring flying off if you are not super careful , near impossible to replace the balance wheel without high risk damage the hair spring and their flimsy keyless works developing easy stretch. As mentioned in a reply above here, they are also many clones and you do not know what you are buying when sourcing wrecks for parts. Genuine parts availability are very expensive hens teeth!!!! You cannot go wrong with a 27XX series as they were also found in the Tudor snowflake submariner fetching high premiums if I am not mistaken.
Let me add that a 2782 and a 2784 will work equally well as their height and stem height positions are identical
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&2&2uswk&ETA_2783
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&2&2uswk&ETA_2784
and
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&2&2uswk&ETA_2782
which will be an easier substitute to the Rolex 15XX series with the stem height position not needing as much fiddling around
The 2824-2 may or may not work but in addition to the stem positioning, you will need to use the right spacers, make sure that the date wheel overlay will not drop down the hour and seconds pivot height etc. This Russian doll will cost you a lot of grief!!! 🙂