The FRAM program wasn't a cookie-cutter plan with a one-size-fits-all modification. Different ships were changed to match different missions, like enhanced ASW capabilities, helicopter hangers for fleet duties rescuing pilots, radar suites to detect air attack on battle groups and surface attack with Harpoon and Tomahawk in later variants. The different configurations often left more of the original main battery intact, as with Noa. It's role was ASW using ASROC and the LAMPS Blackhawk helicopter, so the usual and older Weapon Able forward was not included. But note the enhanced radar and electronics suite and the standard FRAM bridge improvements. I have a nice series of shots of the Chandler (DD-717) in drydock gettin g FRAMed in San Francisco in 1962.
Here's a well-made FRAM model for reference. Just add the second forward battery and switch the hull numbers ....
http://www.steelnavy.com/ISWJohnson-ConeJC.htm
Here's the Noa's only website ....
http://www.destroyersonline.com/usndd/dd841/
Anad here's the best destroyer site on the internet ....
http://www.destroyersonline.com/usndd/