That's it.
It may not be the answer I was looking for but makes perfect sense.
Building a proper 6263 is one of the hardest path you may walk on:
a DW case or Phong's, a nice gen mov, the right gen dial and bracelet, not to mention all the remaining parts, are extremely hard to find and quite expensive.
A 5512 build can save you a couple of hudreds, but would take the same efforts, struggles and time.
Homework done, Dieselpower.
A non-sarcastic = sincere thank you for your wise reply.