It's not a Coupe De Ville. A Coupe De Ville is a limousine or sedan with an enclosed passenger compartment and an open chauffeur's compartment.
The Packard Darrin Victoria was initally constructed on Packard 120 Coupe bodies which were delivered in base form to DArrin's shop. The 120 was fitted with a 282 cu, in. (Roughly 4.6 litre) STRAIGHT eight flathead (Sidevalve to you in the UK! LOL!) up against a three-speed tranny, with overdirve optional.
The top was cut off and some of the metal used to lengthen the rear fenders, which wer also slightly re-contoured. The entire cowl and firewall were scrapped with a cast aluminum three-piece cowl/firewall unit repacing it.
The hood was then lengthened to match and the doors cut down and lengthened.
There were also a few built on the 160 and 180 chassis which was fitted with the mighty Super Eight engine of some 356 cu. in. (5.8 litre) which used hydraulic valve lifters and a three speed tranny, with or W/O overdrive depending on purchaser specification.
The windshield frames were cast at a local foundry and then chrome plated.
The '37-'40 cars all suffered a near-fatal flaw because Dutch cout out the foremost front frame corssmenber in order to lower the girlle shell and radiator, resulting in lots of front wheel wobble and all sorts of interesting handling behaviours.
Packard very quietly recalled all of the cars and installed a substitute cross member which sort of resolved the issue.
1941 and '42 Darrin Victorias were not quite so low because the frame was not cut and the front end retained a much more stock appearance.
I have since owned over twenty Packards and currently am finishing up a low mileage 1941 Super Eight 160 Touring Sedan which I intend to use for regualr transportation. I have added a dual piston power master cylinder for safety, A/C for comfort (Packard fist offered A/C in 1940, by the way!), a concealed modern radio and a done-up-right 12 Volt conversion.
I also own several others, including a couple of parts cars and am actually considering construction of a Darrin Victoria from otherwise unrestoraeable Packards.
If you want to know why anyone would think about driving a car made by a company which went out of business almost sixty years ago.............