The GSX came with a gigantic 455 cid V8 and a Hurst four-speed. It had a lot of other performance changes beside the monster motivator such as hotter cams, bigger valves, a Positrac diff, beefier springs, and a revised jetting for the carburetor. Still, it stayed one of the weird muscle cars that people like. To match the desire of the customers, the GSX was only available in “Apollo White” or “Saturn Yellow”. However, it always came with the iconic big black stripes across the hood.