On the exterior, the aircraft from the French and JASDF are virtually identical to the USN's aircraft. The real differences are mostly internal and classified.
Source: My dad who worked on the E-2C and works for Northrop Grumman. Which reminds me... I've been looking for some schematics of the F-14D...
In progress:
CAD:
1/35 SINCGARS ICOM/ASIP; 1/35 Flat screen TVs; 1/35 tactical light that I shall reveal later 
Models:
1/35 DML M4A1 DV; AFV Club M18 Hellcat; DML StuG IV; DML Armored Jeep w/ .50 cal; Panda Cougar 4x4 MRAP; Academy M3A1 Stuart; 1/700 Midship Models USS Miami; 1/700 Skywave Rudderow Destroyer Escort