Pontiac will launch a GXP version of its newly launched Solstice Coupe next year. The GXP version will come to compete with the 2010 Nissan 370Z. And the company says it will produce around 300 hp.

the extra horses, courtesy more turbo boost, intercooling and a new fuel rail, will be available in the GXP convertible, too, and only with the manual gearbox in either coupe or convertible (automatics will be stuck at 260). Second, that's still about 30 horses shy of the 370Z, if the Infiniti G37 is any guide. But the 3.7 is a V-6, of course.

The 300-horsepower Ecotec turbo is probably a short-term engine, as expected interim Corporate Average Fuel Economy standards before the 2020 rule aren't likely to be kind to such high output. The targa coupe also will come with the 173-horsepower, 2.4-liter Ecotec engine.

.