That heater started with the 68 model around 8/67. Never seen one in a non-padded dash FJ40 (US model). The handle on the side started around 71 or 72. I think the handle change had to do with being in the way of the transmission shifter on the floor. I know I have at least one with the side handle and the slit for a handle in the front. I have four or five of these tucked away. One from a FJ55 that has three defrost holes openings. Two and a parts of one of the early ones and not sure how many later style heater. It seems there were same changes to those too. Never can tell when the next ice age will start