When you really love a particular watch the GEN becomes the only solution. I love this REP community and the topics of conversation, I find are by far more in-depth than the GEN forums, but I had to get the GEN SD. I would love to do a side-by-side comparison, I bet there's only a 20% difference between them. But like my wife who said at the time when we got married and were previously living together, "I just feel legitimate now". It's kinda the same for those special watches.
However, I put on my MBW Great White the other day and it felt and fit really well, and the hands really glowed compared to the GEN due to the plastic dome, GEN GW SD is circa 20K now. I'll probably have to sell it to help pay off the balance on the credit card.
I doubt the GEN dial will fit even if you can find one. Honestly try not to stare at it with a loupe. Even with the GEN, nothing is perfect. Good luck.