Buick Regal GSX

Buick | SLP

2003-2004 SLP Buick Regal GSX: Evolution of a Modern Performance Revival
Buick, SLP

The SLP Buick Regal GSX is a unique chapter in Buick’s performance history — one that resurrects a storied performance name and applies it to a modern mid-size sedan. Unlike most historic Buick performance badges, the GSX designation in this case does not come from General Motors’ factory lineup but from a collaboration between Buick…

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Brand

The History of SLP (Street Legal Performance)
Brand

America’s Street‑Legal Muscle Legacy Founded in 1987, Street Legal Performance — widely known by the abbreviation SLP — became one of the most consequential American performance automotive companies of the late 20th and early 21st centuries. While not a traditional car manufacturer, SLP’s engineering, performance packages, and special editions helped redefine the modern muscle car…

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