this might help. KHT, that 57mm/70 you just redrew was the one listed as Mk 1 on this image, right?
also, I suppose there was also the TAK 120 without the launch rails on it?
the 120mm M50 is already completely redone, here:
I have some reference for at least one 40mm mounting:
https://dl.dropboxusercontent.com/u/632 ... %20ref.PNG
and I have some more refs for the mountings fitted on the dutch destroyers and cruisers, but I'd have to look them up. PM me if you want them
(the 15cm, the 57mm twin M1950, and the 40mm shown above, which I have not been able to exactly named but it was fitted on the friesland and holland classes)
I hope for some belowdeck parts if possible, of course