While Detroit’s Big Three manufacturers – General Motors, Ford, and Chrysler – had produced a few performance-oriented variants of their standard models in the early 1960s, it was Pontiac’s 1964 Tempest GTO that is widely credited with starting the muscle car era that lasted through that decade. Fitted with a strong 389 cid V-8, among other improvements, the GTO would become a legend among performance aficionados.

The second-generation GTO was introduced in 1968 as a larger and sleeker model, but still retained the bite of the original. Available engines ranged from a 400 cid V-8 with 350 hp up to the 455 in Ram Air IV specification, which was conservatively rated by Pontiac at 360 hp, but produced over 500 lbs./ft. of torque. GTOs were available as both coupes and convertibles, and proved popular until the end of production in 1974.

This 1970 GTO Convertible benefits from a quality older restoration that was done prior to its acquisition by Glen Konkle, a noted Pontiac collector who owned at least one GTO from each model year. It is finished in Starlight Black over a black interior, which corresponds to the metal trim tag fitted to the body, though factory documentation from Pontiac Historic Services notes the original color as Polar White. Purchased by the consignor in 2010, it has been used as an enjoyable vintage runabout, having accrued just under 2,700 miles since its purchase.

Accompanied by PHS records and a boot for the convertible top, the GTO presents as a sound and attractive driver with a few minor cosmetic flaws. Offering all of the style and attitude that these cars are so famous for, this legendary muscle car is surely going to make its new owner a proud member of the GTO fraternity.