If you made it to this weekend's Goodwood Festival of Speed (July 3-5), there's no way you could have not noticed Jaguar's special edition XKR. The one-off performance model that was purposely built for the event was painted in an extremely distinct lime-green color while the coupe also featured special exterior graphics in gray and orange.

Other styling tweaks that differentiate this model over the standard 2010 XKR facelift include the 21-inch alloys and the satin graphite detailing to the front grilles, door mirrors, rear signature blade, side window surrounds, headlights and bonnet louvres.

What's more is that Jaguar's engineers fiddled around with the XKR's supercharged 5.0-liter V8 that in standard form makes 510HP and 625Nm or 461 lb-ft of torque launching the sports coupe from standstill to 60mph (96km/h) in 4.6 seconds. In the XKR Goodwood Special, output is lifted to 530 horsepower and torque to 700Nm or 516.2 lb-ft.

The special edition XKR also features a lowered suspension and a tweaked exhaust system for a louder and more intimidating sound. Jaguar said that that the XKR Goodwood Special is a one-off model but we gather that if there's enough interest, the British automaker may launch a limited run series in the near future.