As I said earlier it may have been possible, however it is at the discretion of the project lead. The project lead approaches Bremont military and special projects team, the then chose a base watch and work from there. If only 40 are commissioned custom parts become expensive in low volumes.
Also the boeing range are all current, so no need to shift old stock. Plus the boeing reference is regarding the steel used(tedious, but Rolex boast about their custom 904 steel).
Price wise they are not a £5k watch.
If people don’t like it it’s fine, but a lot of falsehoods and rumour on this thread.