marked the production debut of the "Art and Science" design language first seen on the Evoq concept car. CTS vehicles are built at GM's Lansing Grand River Assembly in Lansing, Michigan. Originally powered by a 3.2 L LA3 V6 producing , the CTS received an updated 3.6 L DOHC V6 with variable valve timing as an option in 2004, producing and of torque. The 3.2 L engine went out of production in 2005, when a new 2.8 L version of the DOHC V6 debuted in an entry-level version of the CTS. In Europe, the 2.8 L replaced the previous entry-level 2.6 L engine. The CTS was originally offered with either GM's in-house five-speed 5L40-E automatic transmission or a five-speed Getrag 260 manual transmission. For the 2005 model year, the Getrag was replaced with an Aisin AY-6 six-speed. In 2004, GM introduced the CTS-V, a high-performance version of the CTS intended to compete with luxury performance sedans like the BMW M3/M5, Audi S4/S6, and Mercedes-Benz C and E-class AMGs. The 2004 and 2005 CTS-Vs were equipped with the 5.7L LS6 V-8 ( at 6,000 rpm, at 4,800 rpm), a Tremec T56 6-speed manual transmission, 14+" rotors and Brembo 4-piston calipers front and rear, suspension upgrades (higher spring rates, stiffer anti-roll bars, six-lug hubs, and two available damper packages), and subtle exterior changes. As the LS6 was phased out, the 2006 and 2007 CTS-Vs received the 6.0L LS2 V-8, which carried the same HP and torque ratings (with peak torque coming 400 rpm sooner). A prototype first generation CTS station wagon was made but it was never put into production. CTS-V (2004–2007) Chassis The first generation CTS-V is based on the same rear-wheel-drive GM Sigma platform as is the base model CTS. The use of a V8 engine required a unique engine cradle distinct from the base CTS V6. Larger anti-roll bars and larger shocks were also added. The spring rate was significantly increased. The 2006-2007 update also included a stronger rear differential and half shaft design. Unique front and rear treatments also included mesh grilles over the front openings, a track-ready suspension, six-lug hubs instead of the regular CTS's five-lug units, and 18×8.5 inch wheels inside of P245/45R18 Z-rated Goodyear Eagle F1 Supercar run-flat tires. Brakes were rotors in the front, with rotors in the rear - each with four-piston Brembo calipers on the front and rear wheels. In addition, GM