Few muscle cars combine rarity, power and luxury quite like the 1970 Buick GS 455 Stage 1 Convertible. As one of only 67 factory 4-speed Stage 1 convertibles ever produced, this example represents the pinnacle of Buick performance: an ultra-low-production, torque-heavy sleeper that stands among the most desirable GM muscle cars of the era. The matching-numbers Stage 1 455 CI V-8 was underrated at 360 HP but delivered more than 500 lb-ft of torque, thanks to its 10.5:1 compression, high-lift camshaft, 4-barrel carburetor, big-valve heads and unique Stage 1 performance calibrations. Adding to its extreme desirability, this car was loaded with options from new, including factory air conditioning—a rarely seen feature on a 4-speed Stage 1 convertible. Additional performance equipment includes the heavy-duty “Firm Ride” suspension, Positraction rear end and power front disc brakes. A meticulous, full frame-off restoration has returned the car to show-quality condition, complete with proper factory markings, beautifully detailed undercarriage finishes and striking Sherwood Green exterior paint with a contrasting black bucket-seat interior and matching black convertible top. Notably, the car features power-adjustable bucket seat (front) with four-way adjuster—further enhancing its rarity and comfort. Highly equipped for comfort and convenience, this GS features power steering, power disc brakes, power windows, tilt steering column, power front bucket seats, AM/FM radio with rear speaker and stereo tape player, speed alert, tinted glass, rear window defogger, remote drivers mirror, carpet savers and handy mats, tach and gauges, Rallye steering wheel, alloy wheels with trim rings and G60-15 Goodyear Polyglas GT tires. The original owner who ordered this car must have checked every option box he could. Making this Buick even more special is full documentation. Complete report from GS Historic Society documenting all factory options as delivered by Buick, Previous GS National 1st place show winner, Previous Buick Club Of America Gold award winner, complete with judging sheets, ownership history, an old classified ad when car was listed for sale, copies of old titles, the owners manual and the consumer information supplement. Exceptionally rare, beautifully restored, possibly the most loaded of any Stage 1 convertible and boasting one of the lowest production combinations of the entire muscle-car era, this one of 67 1970 Buick GS 455 Stage 1 4-speed convertible finished in Sherwood Green with black bucket seats stands as one of the finest examples of Buick’s ultimate performance offering.
