So I have taken ownership of a 1969 U521 extended cab. It was in Costa Rica until it was shipped to the states this summer. I am going over it and discovering some interesting things about this vehicle. One thing is no heater core. I’m sure in Costa Rica they had no need for heat or a defroster. The sweet little ride is in Tennessee where it gets a little chilly November through March. My question is, did theses trucks come with a heater core fan setup? I would think if they were sold in Japan they would have.