It's a rather simple solution really, the OHP New Paisleys were built a bit differently, if you'll all note, the bow is quite different from a standard or even a foreign OHP, thus allowing for changes in quite a bit of area. Originally the New Paisleys mounted a 120mm up front, cause, honestly, I hate Missile based ships, I like guns over missiles, but I saw the flaws in doing that, and adjusted appropriately.
Tim, I do appreciate the real world look you put into the forums, thank you. I had planned for someone making your argument.
Okay so the New Paisleys have been discussed, what about the other Vessels I posted?
Ah ok that makes a lot of sense now.
I might have gone with a 3D radar instead of the SPY-1 / SPS-49 combo on the customs frigate just to keep costs down, but I like the overall look of the design.
On the Ministry Class Destroyer you have both the old SPQ-9A dome on the mast and the new SPQ-9B solid state radar forward of the aft gun. You really should just have the latter. I'd also replace the SPQ-9A you have on the New Paisley Class and the WM-25/Mk-92 FCS you have have on Caliburn for the SPQ-9B
On New Eire you have the old Mk-32 TTs, swap them out for the ones on the USN parts sheet.
Maybe some more commo gear on all of them wouldn't hurt.