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A 2001 Dodge Viper GTS that has stayed with the same family since new is now heading to a new owner, listed for sale on Bring a Trailer with just 2,600 miles on the odometer. What sets this Viper apart from the hundreds of other GTS coupes that have crossed the auction block is a pair of significant modifications: a 2002 Autoform Street Coupe body kit and a Hennessey 650R engine conversion that pushes output well past anything Dodge offered from the factory.
The Autoform package reshapes much of the Viper's factory bodywork, adding a new hood, front fascia, hood scoop, side skirts, and rear valance, along with a raised rear spoiler that gives the coupe a more aggressive stance than a stock GTS. Autoform also supplied a set of 18-inch BBS LM wheels and a Corsa exhaust system, upgrades that were popular among Viper owners chasing a look and sound to match the car's performance.
Underneath that bodywork sits an 8.4-liter version of Chrysler's V10, built by Hennessey Performance under its 650R program. The work on this car is said to have produced 558 horsepower and 565 lb-ft of torque measured at the rear wheels, a substantial jump over the 450 horsepower the GTS made from the factory in 2001. Power still reaches the pavement through the Viper's original six-speed manual gearbox.
Inside, the red-and-silver exterior is matched with custom black-and-red Connolly leather upholstery, along with an Alpine stereo, power windows, and air conditioning. The current seller acquired the car in 2026, and the Viper now shows just under 2,600 miles, with service records, a clean Carfax report, and a New York title accompanying the sale.
The Viper is being offered by Geneva Motorcars, a BaT Local Partner dealership in Darien, Wisconsin. Bidding on Lot #257,582 stood at $60,000 as of this writing, with the auction scheduled to end August 13.
For buyers trying to work out what a modified Viper GTS like this one is really worth, Hagerty's valuation tools offer a useful benchmark. Hagerty currently prices a numbers-matching 2001 Viper GTS in #3 (Good) condition at $55,900, down 2.3% in recent months, while the broader 1996-2002 GTS market has ranged from roughly $24,750 to $130,000 at auction over the past three years across 141 recorded public sales. A 2001 GTS sold for $108,000 through GAA Classic Cars in July 2026, and Hagerty's own guidance notes that modifications like the Hennessey engine work on this car can move value in either direction depending on how much they appeal to a given buyer, meaning documentation and build quality matter just as much as horsepower when it comes time to sell.
This Viper arrives amid a busy stretch of notable auction activity. Motorious has recently covered a no-reserve 1977 Pontiac Firebird Trans Am, Nick Mason's one-of-a-kind McLaren F1 GTR, and a 1,300-mile 2021 Nissan GT-R NISMO, each offering its own lesson in how Hagerty's data can inform what a distinctive collector car is really worth at auction.
