The Revell kit was in 1/542 scale. However, there were a lot of problems with the entire range of Essex class kits, which included Essex, Hornet, Lexington, Wasp, Oriskany, Kearsarge, and Shangri La. I hope I got them all.
Let me try to remember many of the problems ( I am doing this only from memory). First, the same kit was released as each ship with no detail differences. Second, the hull had a sailing ship style keel with no bilge keels. Third, important details such as the five-inch guns and 40 mm AA guns were very plain and lacking not only in detail but in shape as well. Again, the models contained the exact same armament fits although each ship differed significantly. Fourth, the electronics fits were not complete.
Obviously, the modeler can work to provide the necessary detailing to get the ship he/she wants. For example, there was an issue of FSM about ten years ago that had the Revell model of the USS Midway on the cover in which the builder grafted the lower hull from a USS Forrestal kit onto the Midway to more accurately reflect the Midway's fit. I used that article as a guide to graft the lower hull of the Lindberg USS Yorktown onto the Revell USS Lexington in a conversion project converting the Lexington kit to USS Hancock (CVA 19).
Anyway, keep searching Ebay . . . the Lexington is frequently available cheap.
Bill Morrison