Teresa
The Royal series of Chryslers were a lower less optioned etc Windsor. Like
their more costly Windsor they only came with the six cylinder engine. The
other MoPar vehicle which was on the same frame was the De Luxe and Custom
series
De Soto's.
In the same era the Imperials only came with the big eight cylinder.
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
'66 Le Baron w/dual A/C & reverbed AM/FM
'70 Overlander - InterNational