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I can't get enough old muscle car drag racing action. In this video, a seemingly all original '71 Buick GS 455 Stage 1 is squaring off against a similarly appointed 1971 Pontiac Trans Am with 455 high-output engine. Check this out:


Both cars are running low 13s. Is it possible they are factory original or would there have to be some performance enhancements done in order to get them running the strip this fast?