Differences between the Pontiac Solstice and the 2007 Pontiac Solstice GXP revolve around the most powerful production engine in the Ecotec family, a 2.0-liter turbocharged engine that delivers 260 horsepower and 260 lb.-ft. of torque. That’s a ton more power than the standard Solstice, which delivers 177-horsepower and 166 lb.-ft. of torque from its 2.4-liter engine, thanks to its direct injection and turbocharged configuration. That kind of power propels the Solstice to a 0-60 mph time of under 5.5 seconds, a time that either the five-speed manual or automatic transmission should be able to reach. Coupled with 18-inch wheels, StabiliTrak vehicle stability enhancement system, a sport-tuned suspension (also available on the regular Solstice), four-wheel disc brakes with ABS and a limited slip he Solstice GXP sounds as if it will really tear it up – the kind of ride sure to plaster a big, goofy smile on the GXP’s occupants.