I picked up a Tamiya, New Jersey, a few years back that I was going to do exactly that with. I never finished it so I'll be using some of the parts, CIWS, Harpoon, ABL's, etc, on the Alaska (when I get it).
Check out 'WWII Carrier Landing Area Question' in the FSM Ready Room Forum for some basic concept drawings.
Of course, if you want to get wild, you could say the pulled out the boilers and dropped in a nuc plant . . . along with the other modernizations.