Featuring a raised roof and skylights over the cargo and second seat area, this model was an extended wheelbase version of the Buick Skylark station wagon.

[2] The 1964 to 1967 Sport Wagons had a standard skyroof[1] that consisted of four tinted glass panels surrounding the elevated section of the roof over the cargo area that was earlier introduced in 1954 on the GMC Scenicruiser Bus.

Sport Wagons were available in standard and more upscale "Custom" trim package and beginning in 1966 it revived the long-standing tradition offering the woodgrain using DI-NOC a vinyl wood-grained wrap appearance.

The lengthwise skylights along the cargo area remained the same and the simulated woodgrain paneling was offered optionally.

[4] This allowed for optional third row seats that was not available on the smaller 116-inch (2,946 mm) wheelbase Special and DeLuxe wagons.

[1] The distinctive skylights were not offered beginning in 1970 and the Sport Wagons were now built on the 116-inch (2,946 mm) wheelbase shared with four-door sedans.