It’s the fastest street-legal Viper ever

It's street-legal, but you'd better have your brave pills to hand. This is the 2016 Dodge Viper ACR, built for a racetrack near you, and featuring numbers big enough to warp time itself.

We caught our first glimpse of this hardcore Viper ACR at SEMA last year, but now we have some actual details. It's billed as the ultimate track-honed Viper, built to "dominate road courses around the world".

And as with any self-respecting track car, the upgrades over the ‘standard', 8.4-litre, V10-engined Viper cover the aerodynamics, the chassis and the rubber. First up is something called the ‘Extreme Aero Package', and it is quite extreme.

There's a detachable extension for the front splitter, four dive planes, a new SRT bonnet with removable louvres, a rear carbon diffuser, and one of the most excellent rear wings in existence: a fully adjustable effort standing 1.8 metres wide.

"During on-track testing," Dodge tells us, "development engineers have experienced nearly one tonne of downforce at a top speed of 177mph." In fact, this new aero pack offers up three times more downforce than the Viper Time Attack 2.0.

There are new adjustable, aluminium Bilstein racing shocks, a 3-inch ride height adjustment, stiffer front and rear springs, 1.4 degrees more negative camber, stickier, low-profile Kumho tyres apparently good for a 1.5-second-per-lap advantage, a specially tuned stability control system, and bigger Brembo carbon ceramic brakes.

The engine is the same 8.4-litre V10, here producing 645bhp and a handy 600lb ft of torque. In this ACR, it gets new tips to reduce pressure on the side exit exhausts. It's matched up to a six-speed manual, driving the rear wheels.

Dodge has kitted out some ACR-themed trinketry inside, too, and there's also the option of customising your Viper to beyond normal human comprehension. There's no word on price just yet, but the hand-built ‘American Club Racer' is slated to go on sale later this year.

The ultimate in American muscle? Or just too much?