To address structural integrity and crash protection issues, a "B" pillar was added, thereby changing the car from a true hardtop.
For the first time, none of the passenger cars had a "B" pillar, making all closed models true hardtops.
The new design "B" pillars were structurally strong enough to contribute to occupant safety of a roll-over type accident.
The skinniest strip on a car, the B pillar or ribbon of metal between the two side windows, can cost an advertiser $200,000.
Some vehicles had a slim "B" pillar between the front and rear door while others didn't.
Hardtops were no longer produced; all models now had thick "B" pillars.
Alternatively, a coupé is often distinguished from a two-door sedan by the lack of a B pillar to support the roof.
Quad coupé is a marketing name for cars with one or two small rear doors with no B pillar.
On the exterior special chromed B pillars and chrome wheels were included.
"Silver Line" was similar, only in metallic silver color with a black fascia around the back window and the B pillars.