9. Pontiac Tempest Custom S
The Pontiac Tempest Custom S served as the bridge between the entry-level Tempest and the legendary GTO, offering upgraded features and a sportier appearance. Despite this positioning, Pontiac never equipped the Custom S with the high-output V8s that defined true muscle cars. This strategic decision left the Custom S with respectable, yet tame, powertrains, ensuring it wouldn’t overshadow its more famous sibling. Discover more about the Custom S’s unique place in Pontiac history at ClassicCars.com Journal.