Rear Air in a 68 Valiant

Yeah, what moparmat said. Just a blower to clear the back window.Optional.My 72 Satellite had one.
Sounds like it did have air at one time. Back when we were teens a kid I knew bought a 340 4 speed Demon with factory air. First thing he did was yank it out.Hot Rods/cars didn't have air,,we just wanted to go fast.Young & dumb !!