[Dave at Pelican Parts]

Yup. And the fresh air blower is up under the cowl in front. Two blowers.

70-72 cars had a heater blower up on top of the fan shroud, pretty much in the middle of the engine bay. It had two outlets, one going to each side.

73-74 had a heater blower on the left side of the engine bay, mounted on the car's body. It had one outlet only, which went to the left-side heat exchanger only. The "J-tube" on the right side was capped off.

75-76 had the same location and blower as thhe 73-74, but there was a splitter on the outlet and one hose ran to each of the two heat exchangers.

--DD