The Chevrolet SSR (Super Sport Roadster) is a retractable hardtop convertible pickup truck manufactured by Chevrolet between 2003 and 2006. The 2003 and 2004 model years used General Motors' 5.3 L 300 hp Vortec 5300 V8. Performance was 7.7 seconds for 0–60 mph (0–97 km/h) with a 15.9 s/86.4 mph quarter mile run. The 2005 SSR used the 390 hp (291 kW) LS2 V8 also found in the C6 Corvette, Trailblazer SS, and Pontiac GTO, and also offered a manual transmission option, the six-speed Tremec, for the first time. For the 2006 model year, the LS2 engine featured minor modifications that boosted its output to 395 hp (automatic transmission) and 400 hp (manual), respectively. Performance improved dramatically with the LS2, the 6-speed manual version had an advertised 0-60 mph time of 5.29 seconds.