Chevrolet manufactured the Chevrolet SSR also known as Chevy Super Sport Roadster during the period from 2003 to 2006 and along the way engineered this remarkable product that merges design elements with engineering principles. The 2003 SSR was powered by a 5.3-liter Vortec 5300 V8 engine producing 300 horsepower, enabling a 0–60 mph time of approximately 7.7 seconds. During 2005 the model received a power upgrade to the 6.0 L LS2 V8 that produced 390 hp which evolved to 400 hp in the 2006 version additionally reducing the acceleration to 5.29 seconds. Built on GM368 the Chevrolet SSR used a 4-speed 4L60-E automatic transmission but customers could opt for the 6-speed Tremec T-56 manual transmission for improved driving performance. The SSR maintained a 116-inch wheelbase throughout its production period while its length reached 191.4 inches but the dimensions received minor adjustments during the 2006 production year. The vehicle creators at Chevrolet adapted the design from their truck series of the late 1940s to feature both a retractable hardtop and polished cast-aluminum wheels. The Chevrolet SSR cabin included dual-zone manual air conditioning units along with a power-adjustable driver seat. Genuine Chevrolet SSR parts are available for users who want to preserve their SSR vehicles because they meet brand standards which support both performance and extended lifespan.