if the master cylinder has just 1 main reservoir, it is likely a 66. 66 is the only year for that style master cylinder. something to check on if you look at it. it is very possible that the doors and top were added. there is no windshield chrome, but chrome on the doors and top. judging by the position the wipers are in, it looks to have vacuum wipers (only available until 68). my guess is that it is probably a 66. get the vin #. might be a half cab or a roadster (which would explain the top and doors).