I think it may be a '66. The '65s had the functioning vents in the panel between the door glass and the rear window glass like the '64. The '66 and that pic do not have that although the '65 and '66 both had the 3 vertical "vents" in the front fenders. But who knows for *PIC*
sure since many of the ''63-'67 body parts are pretty easily interchangeable. So you can get some odd mixes when drag cars are sometimes "Frankenstein" combinations of salvaged parts. ;^)