After doing a little looking I found the folling quote from the National Park Services Submerged Resources Center website.
Quote:
Of all the ships lost or damaged at Pearl Harbor, USS Arizona offered the most pathetic sight. It quickly became clear that the ship could not be salvaged. The Navy decided that the Army would receive gun turrets No. 3 and 4 for use as coastal defense guns. Two sites were selected: one at Mokapu Head (Kanohe) known as Battery Pennsylvainia and the second at an area known today as Electric Hill (HEI generating plant) on the western shore of Oahu, up the slopes of the Wianae Mountains. Only Battery Pennsylvainia was completed. A test firing took place four days before the surrender of Japan.
I did not find any information on the disposition of the three and five inch guns that were removed from the wreck or of the three 14 inch rifles that were removed from turret No. 2. It was thought for many years that all of the Arizona's 14 inch rifles had been removed, however in the mid to late eighties an exterior suvey of the wreck found that turret No. 1's rifles were still in place, hidden by Pearl Harbor's murky waters.