[Captainfab]

It has been my understanding that the '60-'63 only were available with the recirculating heater. That is the core and fan inside the cab under the dash. The controls were just 2 verticle slide levers towards the drivers side. The '60-'63 also were available with the deluxe heater, Which is the core and fan in the engine compartment. This used 4 verticle sliding levers for the control. Then the '64-'66's had the Thriftair heater. This used the 2 push/pull and turn knob control on the drivers side of the ashtray. The core and fan in the engine compartment. I believe the heater core was slightly smaller than the deluxe core. Then the deluxe heater use the 3 verticle sliding control levers on the drivers side of the ashtray. Also the core and fan in the engine compartment. Someone correct me if I am wrong.