A project of independent entrepreneur Scott Devon, the GTX gave the Viper a decidedly more upscale fit-and-finish worthy of its superlative performance. It got an entirely fresh body – complete with exotic upwards-swiveling doors and two-tone chrome/matte finish – and a more polished cabin. It was also treated to a boost in output, the Viper's 8.4-liter V10 producing 650 horsepower in Devon GTX trim. The result didn't just look sleeker, it also went faster, posting lap records at Willow Springs and Laguna Seca.
Unfortunately the demise of the Viper – not to mention the half-million-dollar asking price – meant that the GTX never really got off the ground. In the end only two examples were made, and now one of them is up for auction by Barrett-Jackson in Scottsdale, Arizona, this week.
Still titled as a 2008 Dodge Viper, serial #1 – in black and chrome – is being offered without reserve, and would certainly take a place of pride in any collection of rare supercars.