"Let me know if you have any thoughts or suggestions. Thanks."
You asked for it:
Keep what you want and throw out the rest.
The nice thing is that Japanese construction standards changed after WW2 to reflect a more American approach. So you can change whatever you want.
First instead of a Mk42 127mm/54, the JMSDF purchased the
Mk16 127mm/54 surplus from the USN and used it quite effectively. The best USN 6" after WW2 was the
Mk16 6"/47 semi-automatic. I suspect that if the JMSDF was willing to give up the DP mission and make it a purely anti-surface weapon they could improve the performance. During the 1950s the
3"/50 Mk27,33,34 was a must as an AAW weapon. (the link over at navweaps can show you pictures of all its many versions with and without a gun house.) The
ASROC "pepper box" launcher came in versions with and without reloads. If your content with 8 rounds and manual reloads you can place it where it fits.
Air search radar:
AN/SPS-6B A pair should do. One on the foremast, and one on the mainmast. For fire control a Mk37 from the ww2 era would sufice for anti surface and AAW you can replace the mk12 and mk29 radars on top of the
Mk37 with the mk25 dish radar.
"Let me know if you have any thoughts or suggestions. Thanks."
You asked for it: :joker: Keep what you want and throw out the rest.
The nice thing is that Japanese construction standards changed after WW2 to reflect a more American approach. So you can change whatever you want.
First instead of a Mk42 127mm/54, the JMSDF purchased the [url=http://www.navweaps.com/Weapons/WNUS_5-54_mk16.htm]Mk16 127mm/54[/url] surplus from the USN and used it quite effectively. The best USN 6" after WW2 was the [url=http://www.navweaps.com/Weapons/WNUS_6-47DP_mk16.htm]Mk16 6"/47 semi-automatic[/url]. I suspect that if the JMSDF was willing to give up the DP mission and make it a purely anti-surface weapon they could improve the performance. During the 1950s the [url=http://www.navweaps.com/Weapons/WNUS_3-50_mk27-33-34.htm]3"/50 Mk27,33,34[/url] was a must as an AAW weapon. (the link over at navweaps can show you pictures of all its many versions with and without a gun house.) The [url=http://www.navweaps.com/Weapons/WMUS_ASROC.htm]ASROC "pepper box"[/url] launcher came in versions with and without reloads. If your content with 8 rounds and manual reloads you can place it where it fits.
Air search radar: [url=http://upload.wikimedia.org/wikipedia/commons/thumb/b/b6/SPS-6C_%28DSC_7006%29.jpg/120px-SPS-6C_%28DSC_7006%29.jpg]AN/SPS-6B[/url] A pair should do. One on the foremast, and one on the mainmast. For fire control a Mk37 from the ww2 era would sufice for anti surface and AAW you can replace the mk12 and mk29 radars on top of the [url=http://upload.wikimedia.org/wikipedia/commons/3/3b/FletcherMk37GunDirector.png]Mk37 with the mk25 dish radar[/url].