At the end of the post I stated: "Bottom line: The 1961 design was mostly different. But there seems to have been some carryover from 1959 in terms of front doors and some sheet metal shaping in lower side panels (those wheel openings)."
The present post continues the exploration of the massive facelift idea. The answer to the question in the title above is probably known by body restorers who have worked with General Motors bodies from model years 1959-1962 or a little after. Few stylists, engineers and product planners active in those days are still with us, so that source seems to be closed absent published information I'm unaware of.
Cars shown in the Gallery are hardtop sedans, along with two regular sedans. Unless noted, photos are of cars listed for sale.
1960 Pontiac Ventura
Wheelbase 122 inches (3111 mm). A Pontiac example of the 1959-1960 body.
1961 Pontiac Bonneville
Wheelbase 123 inches (3124 mm). The 1961 body on a Pontiac with a similar wheelbase. Pay most attention to the door cutlines and the passenger compartment greenhouse's window profiles.
1959 Oldsmobile Super 88
Wheelbase 123 inches (3124 mm) for this and the Oldsmobiles below..
1960 Oldsmobile Super 88
Facelift of the design in the previous image.
1961 Oldsmobile Super 88
The truncated B-pillar has been moved slightly forward, but otherwise the door cutlines seem the same (allowing for adjustments related to the reshaped rear wheel opening).
1959 Buick Invicta
Wheelbase 123 inches (3124 mm) for this and the Buicks shown below.
1960 Buick Invicta
The 1960 facelift.
1961 Buick Invicta
Aside from the A-pillar and beltline, the window profile seems the same.
1959 Buick Electra
Wheelbase 126 inches (3200 mm) for this car and the one in the following image. Now for cars with a longer wheelbase.
1961 Buick Electra - unknown photo source
Again, a wider rear passenger compartment door. Here the C-pillars and backlight windows are similar enough that some carryover structure seems possible.
1959 Cadillac Sedan DeVille
Wheelbase 130 inches (3302 mm). Now for examples with the longest wheelbase.
1963 Cadillac Sedan DeVille - BaT Auctions photo
Wheelbase 129.5 inches (3289 mm). Same general story.
1959 Buick Invicta - photo via driveshare.com
Conventional sedans had full-height B-pillars and six-window fenestration, so I thought it might be interesting for a comparison to a 1961 Buick sedan with the same wheelbase..
1961 Buick LeSabre - BaT Auctions photo
Again, the B-pillar is farther forward, enlarging the rear side door. However, this is a four-window -- not a six-window -- design. The shape of the greenhouse is different, unlike the case of hardtop sedans. So the evidence of a possible massive facelift is quite weak in this instance.





















































