I believe the hood is the same between 64 and 65, but the decklid on sedans, coupes and convertibles will almost certainly be different.
IIRC, there are 2 decklids - 63-64 and 65-66. The 63-64 style curves down between the fins, while the 65-66 style has a squared-off edge at the rear. The 2 styles do not appear to be interchangeable. Can somebody who has ready access to both years please confirm this.
