During 1967-1970, two-door Thunderbirds has wheelbases of 114.7 inches (2913 mm), trivially lengthened to 115 inches (2921 mm) for 1971. Four-door T-birds were based on a 117.2 inch (2977 mm) wheelbase that was shared with the Lincoln Continental Mark III starting 1968.
Early sedans sold fairly well in 1967 and 1968, but production numbers dropped rapidly after that. Production for '67 was about 25,000, and around 8,400 in 1970. So the sedan idea was dropped for the 1972 redesign.
Those T-bird sedans were marketed as "Landaus," having faux landau irons attached to Vinyl covered tops. This was in an effort to position Thunderbirds as being upscale as well as sporty. Landau coupes (with Vinyl covered tops, but no landau irons) strongly outsold their plainer stablemates 1967-71.
Below are images of 1967 Thunderbird Landau sedans and a 1970 facelifted version.
1967 Thunderbird Landau Sedan - Ford photo
An almost too-simple grille design. Edge sections pivot to reveal quad headlights.
1967 Thunderbird Landau Sedan - Barrett-Jackson Auctions photo
Plenty of front overhang provides a long hood line. The landau iron flows downward from the chrome upper window framing. That's a nice touch that almost (for me) justifies their phony inclusion.
1967 Thunderbird Landau Sedan - car-for-sale photo
Basically a nice, trim body design typical of 1960s U.S. styling -- a golden era for many car brands.
1970 Thunderbird Landau hardtop coupe - Ford photo
I don't have a good overhead photo of a '70 Landau sedan, so this image of a coupe will have to provide a view of the long-nose frontal facelift.
1970 Thunderbird Landau Sedan - BaT Auctions photo
Side view showing door cut lines. Note how the rear door's cutline is partly framed by the landau iron.
1970 Thunderbird Landau Sedan - BaT Auctions photo
Doors-open view. Like 1960s Lincoln Continental 4-door models, the rear door is "suicide" hinged. Also note that there is a full-height B-pillar, making this a sedan, and not a hardtop (pillarless) sedan, as some might think, given the design's era.






















































