The GSX package was an optional high performance package that could be added to the GS 455, first offered in 1970. The GSX option was available in only two body colors, Saturn Yellow and Apollo White ('71 & '72 offered additional colors). Engine options included the GS 455 or Stage1. The GSXs could be recognized with the full body length black stripe that crossed over the rear spoiler and was outlined in red pin stripes. A large area of the hood was also black with a hood mounted "Pontiac" tachometer and black front spoiler. Other standard equipment included a floor shifter, black bucket seats, wide oval tires, quick ratio steering and anti-sway bars. Optional was 4 speed or automatic.