Plans were drawn up during the period she was in reserve to modernize "Indiana" and the other ships of her class should they be needed for future active service. In March 1954, a program to equip the four ships with secondary batteries consisting of ten twin guns were proposed, but the plan came to nothing. Another plan to convert the ship into a guided missile battleship arose in 1956–1957, but the cost of the conversion proved to be prohibitive. She would have had all three main battery turrets removed and replaced with a twin RIM-8 Talos missile launcher forward, two RIM-24 Tartar launchers aft, anti-submarine weapons, and equipment to handle helicopters. The cost of the project amounted to $120 million.