The bezel markers are noticably larger and knowing DSN, the caseback will probably be thin. But it all depends on the price point now.
A good 7753 EL case daylight project will probably cost about USD 1.2k ~ USD 1.5k (all mods in of course, lumework + LEO/lello DW + T-crown) with a good starting point of a 7753 movt (about USD550 ~ USD600) + EL Daylight case (USD300 ~ USD 350) if you can find one.
Should make for an interesting discussion when the price is revealed.