You are right, it is not a '63. Didn't notice that till you mentioned it. If the truck is all original, it is a '64 or a '65. Probably a '64. It very well could be an early '64 that was bought in the fall of '63 and titled that way.

As mentioned, let us know what the VIN states.

Bill


'60-'72 Chev/GMC Fan
GMC 9500 Fan
Detroit Diesel Fan