It's always the ones that aren't for sale that are coolest. The Copperhead that was for sale has been trumped, to no one's surprise, by a volunteer team of folks from the UAW and Chrysler's offices in Auburn Hills, Mich. With Mopar Performance racing parts, the downforce on this Viper is 200+ lbs. at 150 mph, and horsepower is jacked up to 554. This one even has two seats.
More pics and full specs the jump.
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