Enterprise lost her beehive and phased array radars during her early 80’s refit, so before STIV. She’s never had a Nimitz style island, it’s still square/blockish and very distinctive.
The Enterprise had an early version of phased array radar that was somewhat troublesome. The Long Beach had a similar system. You will note that the nuclear “frigates” Bainbridge and Truxtun did not have such systems - the superstructures not large enough for the large “billboard” antenna arrays at the time, and I suspect the system was still buggy.The computer technology at the time wasn’t quite there yet. The phased array application on this scale requires a bit of signal processing computer horsepower. So these systems were no where near the capabilities of even the early versions of the SPY-1 found on the Ticonderoga class.