US market those were standard 1/76 when the three point seat belts started until the start of the 78 model when they moved to the roll bar. If a vent window they're from a 77. Not vent window a 76. Market that did not have a roll bar got them on the hard top sides until the end of the 40 series. Markets like Australia did not get a roll bar and side windows were sliding so side would be the same as the 76 model here.