Though officially designated as B-body cars by GM (in line with the Chevrolet Impala/Caprice station wagons), the Grand Safari and its Buick/Oldsmobile counterparts shared a 127-inch wheelbase with "senior" C-body sedans. In contrast to other B-body sedans, B-body station wagons were fitted with multi-leaf rear springs (instead of coil springs).
The Grand Safari and its Buick/Oldsmobile counterparts were classified as B-body cars by GM, similar to the Chevrolet Impala/Caprice station wagons. They shared a 127-inch wheelbase with C-body sedans, but had distinct features such as multi-leaf rear springs.