I don't know. Replacing the TF-33 with the F-110 was quite a job that required extensive modifications to the F-14 airframe. The mounting of the two engines is considerably different. The F-14A+ (first variant) had to go back to NY for airframe modification. The F-14D was designed for the F-110 at the very beginning. I didn't have much to do with the airframe modifications. I was one of the engine guys working the air and fuel delivery issues.
Personally, I'd have the F/A-18E/F replace the F/A-18C/Ds, and go with 24 Tomcats per carrier.
Use the Tomcats for some of the air-superiority stuff, and all-weather attack, while the F/A-18s can also do both. The A-6 was a good plane, but with carriers likely to be the "first responders" to a crisis situation, and since wars are decided by who controls the air, I'd go with two-seat F/A-18Fs, and give the F-14s all-weather strike capability to fill the gap for the most part.