Check under the bottom side of the cowl.. a/c 71 cars had no provision under the drivers side cowl for a vent/hat assembly it was just flat sheet metal . If you see a cowl vent or it's capped off it was born a heat only car.
Lots of cars had factory style a/c added during restoration.. I did it to our kr convert back in the 80's
Jim
Lots of cars had factory style a/c added during restoration.. I did it to our kr convert back in the 80's
Jim