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The Pontiac Solstice continues as two trims for 2008, with the base convertible sporting a five-speed manual transmission and a 2.4L DOHC aluminum four-cylinder engine that produces 173 horsepower. Four-wheel disc brakes, 18-inch aluminum wheels, traction control, a CD player with an auxiliary input jack, and XM satellite radio are all standard. The performance-oriented GXP trades the 2.4L Ecotec engine for a turbocharged 2.0L I4, boosting horsepower by nearly 50% to 260. Along with the fiercer engine, the GXP receives a sportier four-wheel independent suspension, a limited-slip rear differential, dual exhaust outlets, fog lamps, and ABS. Convenience features such as cruise control, power mirrors and windows, remote keyless entry, and steering-wheel-mounted audio controls are included as well. The usual array of options, including a five-speed automatic transmission, leather seats, air conditioning, a six-disc CD changer, and larger speakers help soften the Solstice's purposeful roadster experience. Metallic pedals and a rear spoiler are available on both trims, while the Club Sport Package adds ABS brakes, a limited-slip rear differential, and a stiffer suspension to the base model.