Fitting a new exhaust system, Arden managed to squeeze and extra 30 horses out of the XKR's 5.0-liter supercharged V8 to top 540 horsepower and 498 lb-ft of torque. That's supercar territory, and Arden claims that with the speed limiter removed, its tuned roadster will top out at a follicle-stimulating 200 miles per hour. To round out the package, Arden also fitted a revised front end with optimized intakes and chrome grilles, plus a new diffuser housing the quad exhaust tips. Although the final details have yet to be announced, expect an adjustable lowered suspension and upgraded brakes to be hidden behind those giant 21-inch Sportline rims, along with a host of interior enhancements to further set it apart from the average house cat.