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Here's what's new for 2008
For 2008, the Viper STR10 gets 90 additional horsepower over the 2006 version (there was no 2007 model). Now at 8.4 liters (up from 8.3), its V10 is coupled to a stronger six-speed manual transmission with a racing-style twin-disc clutch. The latter two combine to both handle the additional power and reduce shifting effort. There are also new front fenders, while a revised hood features a larger intake scoop and functional air-exhaust vents.