Gen bezel or dial can be found at Otto Frei & Jules Borel. Be sure to check the 45.5 parts list in the Omega section to help you find the correct numbers so you can source the parts. A gen dial will be lumed already.
Check the Watchmakers & Horologists section for someone who can lume the rep dial. Your choice may depend on where you are located. Cost is around $130/$140'ish?
Help all of us here by doing a little more reading (please and thank you). All of what I have mentioned here can be found by doing a search or perusing just a little more in this forum.
Shameless Plug: If you found this info at all helpful, please feel free to rep this post (please and thank you).