Pontiac’s Grand Prix SJ 455 sits at the crossroads of luxury and muscle, combining big-block torque with personal-coupe comfort in a way few rivals matched. Collectors today chase these cars not just ...

Pontiac's long run as an automaker began with the Six in 1926 and lasted through 2009, when the brand became a casualty of GM's bankruptcy proceedings. During its heyday, Pontiac produced potent and ...