[caseymp2001]

I have a 1972 cheyenne super 4x4 and I was looking at other trucks and something caught my eye. It has a/c but not the two vents on the outside of the dash just the middle one. it has A/C controls in the dash. So did all the 1972 cheyenne supers come with a/c? Do you think this is not a true cheyenne super? Did somome add the middle vent? I still love the truck just wanted a little more info.