German tuner Arden has a penchant for taking British cars and tuning them into performance powerhouses, and we've already seen the work it’s engineers have done on Land Rover, Mini, Bentley and Jaguar models. It is this last brand, Jaguar, that the company really specializes in, and while it has previously worked on the Jaguar XK Coupe the company has just released a new tuning package for the 2010 Jaguar XKR Convertible.

The package includes a range of performance and styling upgrades - not that the 5.0-liter supercharged V-8 powered XKR was lacking in performance already, or in style. Under the hood, Arden’s engineers have managed to liberate some horses from the engine thanks to a new exhaust system. Featuring sport catalysts the new exhaust lifts power by 30 horsepower, bringing the final power output to a Lamborghini Gallardo Superleggera-toppling 540 horsepower. At the same time the torque figures are pushed up from the standard 461 pound-feet to 498 pound-feet of torque, enough to propel the Arden XKR Convertible to a top speed of 200 mph flat.

In terms of styling upgrades, Arden customizes the XKR Convertible with a new chrome grille up front, and modified air intakes. At the rear, a new diffuser houses the custom-installed quad-exhaust pipes from the new exhaust system. At the corners, 21 inch Sportline alloy wheels that also featured on Arden’s previously tuned XKR Coupe can be found. Other upgrades for the Coupe, such as big brakes, a leather sports steering wheel and a lowering system will likely be available for the Convertible as well, although Arden hasn't given any official word to that matter yet.