Rex
The dual air option was offered on many Imperials and Chryslers. The Le
Baron owners like to say they either have the N/C air or the option of dual
air.
There is a Formal Black '63 Le Baron in Omaha, Neb owned by Jeff Ingraham
which has the dual air option. I too have a dual air '66 Le Baron.
Rodger & Gabby
Colo Spgs
'47 De Soto Custom w/Fluid Drive & passenger door mounted swamp cooler
'63 Le Baron w/F-Sweep trunk lid & std A/C
http://www.1962to1965mopar.ornocar.com/rodgergabby63.html
'66 Le Baron w/dual A/C & reverbed AM/FM