This spy shot, posted Friday by Winding Road, appears to show a powertrain test mule for the '08 Viper. (More photos here.)
The massive hood vents add fuel to the speculation that the fourth-generation snake will get a serious horsepower boost, possibly with help from the clever chaps at McLaren Performance Technologies. points to the McLarenized V10 Viper shown at this year's Detroit Auto Show, and rated at a stout 615 hp, as an indication of what's to come, with a likely target of 650 hp for the 2008 car.

No wonder the Corvette gang are working on the " Blue Devil"...

[Sources: Winding Road,]

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